Approximately how many elements accour naturally on earth?

Answers

Answer 1

I belive that the elements 1 through 92 occur naturally on Earth, except for elements 43 and 61, although these are only found in very limited concentrations. The elements mostly on the periodic table that accompany uranium are generated only chemically and are classified as transuranium or transuranic components.


Related Questions

Where are electrons found in Atoms

Answers

Answer:

Explanation:

The nucleus (center) of the atom contains the protons (positively charged) and the neutrons (no charge). The outermost regions of the atom are called electron shells and contain the electrons (negatively charged). Atoms have different properties based on the arrangement and number of their basic particles.

Explanation:

Issun Shingeki... Messatsu!

In short, electrons are the negative charge in Atoms.

how can you use the electron configuration to determine the number of valence electrons

Answers

Valence electrons can be found by determining the electronic configurations of elements. Thereafter the number of electrons in the outermost shell gives the total number of valence electrons in that element.

Here, we are required to explain how the electronic configuration can be used to determine the number of Valence electrons.

The algebraic sum of electrons in the highest energy level in an electron configuration is the number of Valence electrons of the element.

Valence electrons simply refers to electrons present in the outermost shell of an element.

Valence electrons simply refers to electrons present in the outermost shell of an element.The electron configuration is a representation of the arrangement of electrons in the atomic orbitals of an element.

The number of electrons present in the outermost shell as evident from the electron configuration can be used to determine the Valence electron in the elements.

Fir instance: the electron configuration of potassium; 1s² 2s² 2p⁶ 3s² 3p⁵

The algebraic sum of electrons in the energy level 3 therefore is the number of Valence electrons.

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a genetic mutation caused a newt to have faster reflexes. after generations, most of the newt population has the reflex mutation. what most likely caused this change

Answers

Answer:

Newts with the mutation are better able to survive and reproduce than newts without the mutation.

Explanation:

Why do scientist study ice cores
Select all that apply
To study Earth's past climates
To study how Earth's climate is changing now
To study how climate typically stays the same
To study how it might change in the future

Answers

Answer:

to study earth's past climate

Answer:

Explanation:

Air bubbles and dust get trapped in ice as it forms. And the ice in some places, like Antarctica, has stayed frozen for over a million years. Scientists drill holes in the ice and remove ice cores. Each year's worth of ice forms a layer within the core.

The material trapped in ice layers gives information about the climate at that time. Scientists study the layers to learn about past temperatures and precipitation. They can learn how the amount of carbon dioxide in the atmosphere has changed over time. The layers also reveal when events such as volcanic eruptions have taken place.

Which is more important: species richness or species evenness?

Answers

Answer:

Honestly i think that its Richness because its good to have a good amount of different species so that there is a good number of animals to create a food chain. The amount of animals in a population is important but its more important to have a variety of different animals so that all the populations have other animals to eat or survive off of.

Explanation:

Please help on number 15 I’ll make brain list of you do it for me please.

Answers

Answer:

A

Explanation:

I'm not 100% the reason that I think it's a is because I remember something about climate.

Which of the following procedures demonstrates repetition?

Answers

Marco places a toy car at the top of a ramp. He releases the car and measures how long it takes for the car to reach the bottom of the ramp. Then, he returns the car to the top of the ramp, releases the car again, and makes an additional measurement.

An atom's nucleus contains three protons and three neutrons. What is the
overall charge of the nucleus?
A. +3
B. +6
C. -3
D. 0

Answers

Answer:

+3

Explanation:

protons are positive and neutrons are neutral, so, thinking if it in mathematical terms, three positive 1's + three 0's = 3

What is meant by "true nucleus".

Answers

it simply means the cell's DNA is surrounded by a membrane. therefore the nucleus houses the cell's DNA and directs the synthesis of the proteins and ribosomes the cellular responsible for protein synthesis.

Food labels provide which of the following information

A. Number of servings
B. Calories per serving
C. Vitamin and mineral content
D.All of the above

Answers

It is All of the above

HELP PLEASE! WILL GIVE BRAINLY! Describe a strong, bond in which electrons are unevenly shared between two atoms due to a different in electronegativity. A. Adhesion b. Hydrogen bond c. Polar covalent bond. Ionic bond

Answers

Answer: Polar covalent bond

Explanation:

In ionic compounds, electrons are transferred between atoms of different elements to form ions. But this is not the only way that compounds can be formed. Atoms can also make chemical bonds by sharing electrons equally between each other. Such bonds are called covalent bonds

Which part of Earth is included in the hydrosphere?

Answers

Answer:

air

Explanation:

Water, surface ground and air.

Explanation:

Elderly people fear dependency because
they lose their independence,
b. their status in society changes.
it necessitates new role behaviors.
all of the above
d.

Answers

I would say the answer is D

I hope this helps :)

According to the question, Elderly people fear dependency because all of the above.

What are old people worried about?

Fear of losing independence as they grow older is a key concern across the ages. whether that could mean losing memory, being in poor health or not having financial security.

Thus, option "D" is correct.

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Can you please answer this NEEDS answers and work

Answers

Answer:

1. (a) protons (b) neutrons (c) electrons

2. positive +, protons. negative -, electrons. no charge 0, neutrons.

3. periodic table

4. 2 atoms

5. chemistry

6. 6 atoms, 4 hydrogen and 2 oxygen

7. oxygen

8. H2O

i dunno the answers for the rest but i hope this helped :)

Are state changes chemical or physical changes? Provide an example of a state change and explain why it is a chemical or physical change.

Answers

Answer:

physical

Explanation:

example: water freezing into ice

there is no change in the chemical properties, frozen water is still water

What happens to macromoleclues from food during digestion

Answers

Chemical digestion is the biochemical process in which macromolecules in food are changed into smaller molecules that can be absorbed into body fluids and transported to cells throughout the body. Substances in food that must be chemically digested include carbohydrates, proteins, lipids, and nucleic acids.


match the type of river to to its best description.

Answers

Answer:

Old rivers-Have many meanders

Young rivers-Carry large objects

Mature rivers-Carry medium-sized objects

The following are the correct matches:

Old rivers-Have many meandersYoung rivers-Carry large objectsMature rivers-Carry medium-sized objects

What are rivers?

Rivers are bodies of flowing water that are typically found on the surface of the Earth. They are formed by the accumulation of precipitation, such as rain or snow, in a specific area and flow in a defined channel towards an ocean, a lake, or another river. Rivers can vary greatly in size and length, with some being just a few meters wide and a few kilometers long, while others can be several kilometers wide and thousands of kilometers long.

They are an important resource for humans and other living organisms, providing water for irrigation, drinking, and industrial uses, as well as serving as habitats for a wide variety of plant and animal life. Rivers also shape the land they flow through, eroding and depositing sediment, and creating features such as valleys, deltas and canyons.

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what is transport system?short answer in plants

Answers

Plants have two transport systems, xylem and phlome. Xylem transports water and minerals while phlome transports sugars and amino acids dissolved in water.

Which organelle lines up and guides the chromosomes inside the cell during cell division in an animal cell? A. Cytoskeleton B. Ribosomes C. Centrioles D. Vacuole

Answers

Answer:

It would be C!

Explanation:

The function of Centrioles is to help organize the chromosomes before cell division occurs so that each daughter cell has the correct number of chromosomes after the cell divides! hope this helps!

Tyrone slipped and fell on his gluteal region. Which area of his body did he injure?
1. the shoulder blade
2. the lower back
3. the buttocks
4. the groin

Answers

Answer:

the buttocks

Explanation:

the glutes are your behind.

C. The Buttocks

Gluteal=Buttocks

What would be the main problem with reproduction if meiosis did not take place to form sex cells?

A. The zygote would have two nuclei.

B. Fertilization would result in a zygote with half as many chromosomes as the parents.

C. Fertilization would result in a zygote with twice as many chromosomes as the parents.

D. The zygote would have no nucleus.

Answers

Answer: C. Fertilization would result in a zygote with twice as many chromosomes as the parents.

Explanation: Hope this helps

Answer:

The zygote would have two nuclie

Explanation:

Which of the following is the best evidence that Earth’s continents were once in vastly different positions than they are today? a. Penguins are found only in the Southern Hemisphere. b. Fossils of tropical plants are found in c. Volcanoes encircle the Pacific Ocean. d. Major rivers form deltas from continental erosion. explain for every answer PLEASE I NEED IT IS DUE TODAY!!!!!!!!!!!!!!!!

Answers

Answer:

whats the full answer for b I think its your best bet

What units can be used to measure density?

Answers

Answer:

Kilogram per cubic meter

Explanation:

Hope this helps<3 i hope u have an amazing day luv

Blood pressure can be taken by using the carotid artery. This artery is found on the side of the neck. Which region best describes the location of the carotid artery?
1. facial
2. cervical
3. buccal
4. cephalic

Answers

Option 2 is the correct answer, cervical

Tonya is modeling the discovery of electromagnetic induction. Which procedure should she use?
O moving a magnet into a coil of wire in a closed circuit
O moving a magnet into a coil of wire in an open circuit
O bringing a compass near a wire that has no electric current
O bringing a compass near a wire that has an electric current

Answers

Answer:

Moving the MAGNET to a CLOSED circuit

Explanation:

Answer:

A

Explanation:

A shadow is caused when an object blocks sunlight. For example, when your body blocks sunlight, you may see a shadow of yourself on the ground. How do you think the shadow of an object, such as a flagpole, would change over the course of the day as the Sun appears to move across the sky?

Answers

Answer:

The position of the sun affects the change in the direction and size of the shadow of the object. When sunlight is blocked by and object a shadow forms, as the earth moves on its axis daily it looks like the sun rises in the east and sets on the west.

When the sun is low in the sky the more light is blocked by an object which means the shadow will be longer and shadow will always point far from the direction of the sun.

In the morning sun is in the east so the shadow will be towards the west in the morning, shadows are long and point northwest and at noon, shadows are short and point north late afternoon shadows are long and towards the northeast.

Answer:

M

Explanation:

6Both plant and animal cells have a cell wall.

A.
True
B.
False

Help please thank you

Answers

Answer:

False the answer is actually false

Plant cells have a cell wall, as well as a cell membrane. In plants, the cell wall surrounds the cell membrane. This gives the plant cell its unique rectangular shape. Animal cells simply have a cell membrane, but no cell wall.

So the correct answer is B. False

13. The geological theory that states that pieces of Earth's outer layer are in
constant, slow motion is the theoryof *
subduction.
plate tectonics.
sea-floor spreading
deep-ocean trenches.

Answers

Answer

sadc

Explanation:

sdsdsdd

1 point
3. When gametes (sex cells) are produced from a body cell during normal
meiosis, which of the following describes the number of chromosomes in
each new sex cell? *
A. Each resulting cell has the same number of chromosomes as the original body cell.
B. Each resulting cell has twice the number of chromosomes as the original body cell.
C. Each resulting cell has one-half the number of chromosomes as the original body
cell
D. Each resulting cell has one-fourth the number of chromosomes as the original body
cell.

Answers

Answer:

B

Explanation:

Which statement describes the effect that a DNA mutation most likely has on an organism?

Answers

Answer:

is it multiple choice?

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