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Answer:

B- the number of protons and the number of electrons.

Explanation:

The atomic number equals the change on the nucleus. It therefore also equals the number of protons in the nucleus and also equals numerically the number of electrons in thw neutral atom. The atomic number has the symbol Z.

Explanation:

we know that,

From Left to right (Period) atomic radius decreases

and

From Top to bottom (Group) atomic radius increases.

Li, C, O, F belongs to same period.

So,

Atomic radius decreases if we go left to right

Increasing order of Atomic radius -

Li > C > O > F

Therefore,

Option C is correct ✔.

Answer: C

Explanation:

Answer:

Group B

Explanation:

The fish in group B are those in the control group.

A control group during an experiment represents a group of the subject that is subjected to all experimental variables except the independent variable - the manipulate-able variable that is supplied by the experimenter which directly affects the dependent variable.

In this case, the independent variable is the type of food given to the two groups of fishes - microwaved or regular food while the dependent variable is the time it takes for the fishes to swim through the maze. Since the focus of the experiment is to see if microwaved food enhances the swimming speed of fishes, the group of fish that receives microwaved food would represent the treatment group while those that received regular food would be the control group.

Hence, group B represents the control group.

Answer:

The Answer Is Quarks

Explanation:

Its mad up of Quarks

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pls make me brilliant or something

The particle that is labeled with a question mark (?) in the diagram is Quarks

Quarks are elementary particles and fundamental constituents of matter. They are considered the smallest known particles that make up protons and neutrons, which are the building blocks of atomic nuclei. Quarks are classified as fermions, which means they follow the rules of quantum mechanics and obey the Pauli exclusion principle.

There are six known types, or flavors, of quarks: up (u), down (d), charm (c), strange (s), top (t), and bottom (b). Each quark flavor has a unique set of properties, including mass, electric charge, and the way they interact with other particles through the strong nuclear force. The up and down quarks are the lightest and most common, while the top quark is the heaviest.

One notable property of quarks is that they possess a fractional electric charge. The up quark has a charge of +2/3 (e/3), while the down quark has a charge of -1/3 (-e/3), where "e" represents the elementary charge carried by an electron. Quarks are never found in isolation due to the confinement principle, which means they are always bound together in composite particles called hadrons.

Quarks interact through the strong nuclear force, which is mediated by particles called gluons. This force binds quarks together to form protons and neutrons, and also governs the interactions within atomic nuclei.

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Answer:

Its B. The atoms form a bond with a bond lenth of 75 pm

Answer:

1. from      2. to

Explanation:

Answer:

Option A. Na⁺

Explanation:

Floride ion (F¯) simply indicates that the fluorine atom has gain an extra electron.

Thus, the electronic configuration of the fluoride ion (F¯) can be written as follow:

F¯ (10) => 1s² 2s²2p⁶

Next, we shall determine the electronic configuration of the element given in options to see which is the same as that of the fluoride ion (F¯). This is illustrated below:

Na⁺ (10) => 1s² 2s²2p⁶

Na (11) => 1s² 2s²2p⁶ 3s¹

Cl (17) => 1s² 2s²2p⁶ 3s²3p⁵

Cl¯ (18) => 1s² 2s²2p⁶ 3s²3p⁶

From the above illustrations, we can see that the fluoride ion (F¯) has the same electronic configuration as Na⁺.

Each element is made up of electrons and these electrons are filled in different shells. These are the following shells in the electrons:

According to the question, the fluoride ion has 10 electrons in its 2 shells, that is 2 in K shell and 8 in L shell.

A similar number of shell and electrons to the fluoride ion is sodium ion ([tex]Na^{+}[/tex])

The [tex]Na^+[/tex]has a total 10 number of electrons, hence the electronic configuration is 2 and 8.

Therefore, the [tex]Na^+[/tex] is the correct option.

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Answer: C

Explanation:

The N2 should have a triple bond because it needs three covalent bonds to fill its outer shell. This means the two atoms need to share three electrons each.

It also serves as a nice illustration of a triple-bonded molecule. For the Lewis structure of N2, there are ten accessible valence electrons. Therefore, option C is correct.

The diagrams known as Lewis structures, often referred to as Lewis dot formulas, Lewis dot structures, electron dot structures, or Lewis electron dot structures, depict the interactions between the atoms in a molecule as well as any lone pairs of electrons that may be present.

It contradicts the octet rule, as shown by the production of molecules, and could not account for the release of energy during the formation of covalent bonds.

The three parallel lines between the N atoms represent three bonds. This is a triple bond, with one electron from each N atom contributing to each bond. A total of 6 electrons are thus represented by this triple bond.

Thus, option C is correct.

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Answer:

its 1 not negative

the atom shown below was hydrogen, known as H.

Answer:

c or b

Explanation:

it is not d because my cats sleep all night

it is not a because i like cats but my friend loves dogs

Answer:

Answer is C

Explanation:

are cats more active at night than the day?

Answer:

h2s

Explanation:

The closest chemical analogue for water is hydrogen sulphide or H₂S. Because, both oxygen and sulfur are same group elements and shows similar properties.

Hydrogen sulphide or  H₂S is a covalent compound formed by the combination of two hydrogens and one sulphur atoms. In this compound, each hydrogen shares one electron to sulfur and sulfur shares its two valence electrons to each hydrogen.

Water is  H₂O, which is formed by the strong hydrogen bonding between hydrogen and oxygen and it exists as liquid mostly. Most of the compounds can be dissolved in water.

Lithium oxide Li₂O is a covalent compound with partial ionic character and it does not exhibit any similarity with water in any case.

Bothe sulfur and oxygen are in 16th group. They are gases with high electronegativity. Hence, both H₂O, H₂S are polar compounds. Both sulfur and oxygen have affinity towards hydrogen. Both have similar shape and bond angle.

Moreover, H₂S can dissolve some minerals and acts as a good solvent like water.

Hence, the better substitute for water is H₂S.

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Answer:

C. An intitial velocity that is faster than a final velocity.

Explanation:

taking the test rn but it makes sense because you'd have to slow down to get  a lesser final velocity.

Answer:

C

Explanation:

Answer:

in the modern periodic table elements are raised according to increasing atomic number

Answer:

neutrons in c,o,b,h

Explanation:

i think so

Answer:

6860

Explanation:

Answer:

Black holes are so dense that light cannot escape from them, and they are difficult to detect. Satellites above the Earth's atmosphere can detect bursts of high energy radiation given off by black holes. Dozens of stellar black holes have already been detected in the Milky Way, where there may be tens of millions more.

Explanation:

Answer:

Its 19.

Explanation:

K (potassium) has 19 electron according to the atomic number in the periodic table. The atomic number tells you the number of protons and electrons.

Answer:

VVV

Explanation:

Covalent bonds are formed when atoms share electrons and ionic bonds are formed when positive and negative ions bond to form an ionic compound.

Answer:

yes

Explanation:

Answer:

Hunds rule is violated here.

Hunds rule : pairing of electrons takes place only if all the orbitals are filled with single electrons each.

Answer:

It can help identify elements quicker.

Explanation:

Answer:

where are the solid blocks?

Explanation:

Answer:

everything including the space...

hope it helps...

Answer:

homogeneous mixture

Explanation:

A homogeneous mixture and Solution are the physical blend of two or more substances with uniform composition. Thus, options A and C are true.

“Mixture is an act of combining two or more chemical substances that are not chemically linked.”

Types of mixtures –

There are two main types of mixture.

Homogeneous Mixture –

A Homogeneous Mixture is a mixture in which composition is uniform throughout the mixture, and it appears like a single substance.

Example – Air is a homogeneous mixture of gas etc.

Heterogeneous mixture –

A Heterogeneous mixture is a mixture in which composition is not uniform throughout the mixture.

Example – Vegetable soup is a heterogeneous mixture etc.

Solution –

A Solution is a homogeneous mixture of two or more solutes dissolved in a solvent.

Example – Solution of sugar in water etc.

Thus, a homogeneous mixture and solution are the physical blends of two or more substances with uniform composition. Thus, options A and C are true.

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Answer:

There are 3 non-metals in benzoic acid.

Explanation:

They are Hydrogen, Oxygen, and Carbon.

Plants are unique organisms that can absorb nutrients and water through their root system, as well as carbon dioxide from the atmosphere. Soil quality and climate are the major determinants of plant distribution and growth.

Answer:

11 protons and 11 electrons.

Explanation:

Na is a neutral element and element number 11.

This means that it has 11 protons and 11 electrons.

In order to create an isotope, you would add or get rid of neutrons to get different mass numbers but the same element. The number of protons and electrons would remain the same.

1. A ➡️ Metals

2. B ➡️ Metalloids

3. C ➡️ Non-metals

4. D- Column ➡️ Group/Family

5. E- Row ➡️ Period

6. F ➡️ Halogens

7. G ➡️ Noble gases

Explanation:

The Periodic Table is known to be an array of chemical elements that are organized in order of their increasing atomic number. That arrangement gives a recurring pattern known as the periodic law in their properties.

Periods are found in the horizontal rows (across) the periodic table, while groups are found in the vertical columns (down) the table.

The Periodic Table was discovered by D.I Mendeleev.

Answer: non metal

Explanation:

Nonmetals are dull, possess high ionization energies and electronegatives and are typically poor electricity conductors as they're insulators.

Non metals are also brittle and possess low melting point. Therefore, with the explanation, the sample is most likely a non metal.