Answer:
The lattice energy decreases down the group and increases across the period, therefore, the lattice energy of LiF > lattice energy of LiI, and the lattice energy of NaCl < the lattice energy of AlCl₃
Explanation:
The given parameters are;
Compound [tex]{}[/tex] Lattice Energy (kJ/mol)
LiF [tex]{}[/tex] 1030
NaCl [tex]{}[/tex] 788
MgCl₂ [tex]{}[/tex] 2326
LiI [tex]{}[/tex] 730
AlCl₃ [tex]{}[/tex] 5376
Lattice is the energy that must be added in order to split one mole of a ionic solid compound into gaseous ions
Given that the force of attraction between charges is inversely proportional to the square of the distance separating the charges, we have that as the atomic radius increases progressively down the group, the lattice energy decreases, therefore, LiF which has a shorter inter nuclear distance than LiI due to fluorine, F, being higher up on the periodic table than iodine, I, has a greater lattice energy than LiI
Similarly, given that the atomic radius decreases across the period, and that sodium, Na, comes before aluminum, Al, as we move across period 3, of the periodic table, the inter nuclear distance between atoms of in NaCl is larger than the internuclear distances between the atoms of AlCl₃, as well as the presence of more chlorine atoms in AlCl₃ than in NaCl, the lattice energy of NaCl is smaller than the lattice energy of AlCl₃.
Scientists want to eventually collect data from the surface of Venus. Which is a technology that could be used to collect samples and determine if it was habitable? a rover vehicle that can withstand the harsh Venus environment satellites that predict locations for water formation on Venus computer simulations that model the formation of Venus a telescope that records information about the weather patterns on Venus
Answer:
A:
Explanation:
Because im smart
How can we write a chemical reaction that explains what happens during a chemical change?
Answer: When we represent a chemical reaction in terms of words, we write a word equation. For example, when hydrogen gas reacts with oxygen gas to form water, we can write a word equation for the reaction as follows: hydrogen + oxygen→ water To the left of the arrow, we have the 'before' situation.
Explanation:
Carbon-14 has a half-life of 5730 years. How much of a 144 g sample of carbon-14 will remain after
1.71910 years
Answer:
i miss you
Explanation:
How many reflector surfaces does a radio telescope have?
Answer:
I believe 2
Explanation:
Primary parabolic reflector and the sub reflector
Which is another name for groups of elements?
Answer:
another name for groups of elements is family.
Answer: The Periodic Table of Elements
Explanation: The Periodic Table of Elements is a table with different elements arranged in an order, usually in vertical rows of two.
Which refers to the number of wavelengths that pass a fixed point in a second?
wavelength
O amplitude
frequency
O compression
Please hurry will give brainliest on 10 mins
Answer:
frequency
Explanation:
The number of wavelengths that pass through a fixed point in a second is called the frequency of the wave. It has the unit of Hertz. Hence, option C is correct.
What is frequency ?The term that refers to the number of wavelengths that pass a fixed point in a second is frequency.
Frequency is a fundamental concept in wave motion and is defined as the number of complete cycles of a wave that occur per unit time. For example, the frequency of a sound wave is measured in hertz (Hz) and is equal to the number of sound wave cycles that occur per second.
The higher the frequency of a wave, the more cycles occur in a given period of time. Wavelength, on the other hand, refers to the distance between two adjacent points on a wave that are in phase with each other, such as the distance between two crests or two troughs.
Wavelength and frequency are related, and the frequency of a wave is inversely proportional to its wavelength. As the frequency of a wave increases, its wavelength decreases.
Amplitude refers to the maximum displacement of a wave from its equilibrium position, while compression is a region in a longitudinal wave where the particles are close together. Hence, option C is correct.
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Why do isotopes of the same element have the same atomic size?
Answer:
Isotopes of any given element all contain the same number of protons, so they have the same atomic number (for example, the atomic number of helium is always 2). Isotopes of a given element contain different numbers of neutrons, therefore, different isotopes have different mass numbers.
The atomic size of an element significantly depends on the number of protons. It is the characteristic property of isotopes that they possess the same number of protons which is responsible for the same atomic size.
What are Isotopes?Isotopes may be defined as one of two or more species of atoms of a chemical element that have the same atomic number and location in the modern periodic table with identical chemical behavior but with different atomic masses and physical properties.
In a more simple sense, isotopes are those elements that have the same atomic number but different atomic mass. The atomic number depends on the number of protons which remains constant in isotopes. So, the isotopic elements have identical atomic sizes.
Therefore, the isotopes of the same element have the same atomic size.
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What happens to the temperature of a substance during a change of state?
A. It increases quickly.
B. It changes gradually.
C. It decreases quickly.
D. It stays the same.
Answer:
Explanation:
It remains the same!
the chemical formula 4N2O has how many atoms of each element?
Answer:
8;1
Explanation:
eight nitrogen and one oxygen
HELP ME ASAP TO GET BRAINLYYYY!!!!
Answer:
B C A
Explanation:
because as you pour the blue stuff in it will straight up go to the bottom (and has less blue coloring) Then it will go to the top (lil more blue coloring) then eventually the whole jar will be blue
hope this helps you out bro
Answer:
The order is B, C, A.
Explanation:
When the liquid is first poured into the container, the entropy is still very high because there is a very large difference in color of the liquid. The more time passes, entropy becomes lower because the blue color liquid disperses through the rest of the container. So the entropy is the highest in B and lowest in A. At A the entropy is as close to 0 as it can be in this situation out of the three parts.
How much zeros does 1 million have? and 2 days ago was my bday turning 13
#LibraGurl
Answer:
there is about 6 zeros in 1,000,000
Answer:
6 0's
Explanation:
happy bday #LibraGurl
What are the three basic forms of matter?
Answer:
Solid, Liquid, and Gas!
Explanation:
Which of the questions would involve the investigation of kinetic energy?
A. What material makes the strongest boat?
B. How does the color of a boat affect heat absorption?
C. Do boats float higher in salt or fresh water?
D. What is the effect of a boat’s shape on its speed?
Answer:
D. What is the effect of a boat’s shape on its speed?
Explanation:
Kinetic energy can be defined as the energy possessed by an object or body due to its motion. It is the amount of work required to accelerate an object or body with a specific mass from its point of initial rest to a final velocity.
Mathematically, kinetic energy (K.E) is equal to 1/2(mv²).
Hence, the question which would involve the investigation of kinetic energy is "what is the effect of a boat’s shape on its speed?" because speed is directly related to the motion of the boat. Generally, the shape of the hull of a boat has an effect on the speed of the boat.
Answer:
What is the effect of a boat’s shape on its speed?
Zn + 2HCl--------------> Zn Cl2 + H2
This is ______________________ kind of reaction.
Answer:
Single displacement (Substitution)
Explanation:
The its motion______ energy of an object is related to both the object's position and it's motion.
O A) kinetic
OB) potential
C) mechanical
Answer:
mechanical
Explanation:
cause mechanical energy is the sum of potential and kinetic enery
What do you need to form a cloud?
moisture, condensation, and temperature. 2. Evaporation and condensation are part of how a cloud forms.
What causes a static charge
Answer:
Separating or rubbing materials.
Explanation:
Static electricity occurs when positive (+) or negative (−) electrical charges collect on an object's surface. There are several ways this condition can be caused.
Which has a greater energy, a photon of yellow light, or a photon of green light
Answer:
A photon of green light has a higher energy since it has a higher frequency than the yellow photon. And we can see that on the picture representation of the light spectre.
is salt always soluble is water?
For example, salts of sodium, potassium and ammonium are usually soluble in water. Notable exceptions include ammonium hexachloroplatinate and potassium cobaltinitrite. Most nitrates and many sulfates are water-soluble
Answer:
Many ionic compounds exhibit significant solubility in water or other polar solvents. Unlike molecular compounds, salts dissociate in solution into anionic and cationic components. For example, salts of sodium, potassium and ammonium are usually soluble in water.Explanation:
Hope this helpsWhich of the following is a fossil fuel?
A. oil
B. Copper
C. aluminum
D. Cattle
Answer: oil
The answer is A, oil. Oil is one of the most popular fossil fuels. You probably did not know the answer was fossil fuels. The answer is oil.
Hope this helps you!
What is the for this Name 0.1013
Answer:
it s not on periodic table this is not real element
Explanation:
(1 Point)
How many atoms are there in 3.33 moles of strontium?
Answer:
every mole of anything contains Avogodro's number of atoms. So: 6.08x10^23 x 3.33 = ?
Explanation:
Ionic compounds can conduct electricity in
Answer:
Solution and the liquid state
Explanation:
Edge2020
How many oxygen atoms are there in 3 molecules of CH3FO?
Answer: There should be 3.
Explanation:
will yall help me, please
Answer:
D. create metal works of art. The bronze age was the age of crafting out of metal. So, using swords of metal would fit directly into the bronze age as they're metal.
what part of the atom canot have its part acuratly determined ill give brainlest hurry
Answer:
The answer to this question would be electron.
Electron is located on the outer side of the atom and constantly moving in an orbit so its location cannot be accurately determined. The cloud around the center of the atom is drawn to picture the orbit.
Neutron and proton located in the middle of an atom in a part that called nucleus. Nucleus location is kept at the center and it doesn't move.
Explanation:
Not all atoms of the same element have the same mass. These atoms are called isotopes.
Which statement is true concerning oxygen-16 and oxygen-18, two common isotopes of
oxygen found in the air?
A.They have different numbers of electrons.
B.Oxygen-18 has two more protons than oxygen-16.
C.They have the same mass number.
D.They behave the same way in chemical reactions.
Answer:
C
Explanation:
4.They are different states of the same pure substance
Potassium hydroxide (KOH) reacts with sulfuric acid (H2SO4) to produce potassium sulfate (K2SO4) and water (04.03 MC)
Answer: A double replacement because potassium ions bond with sulfate ions to form a salt
Explanation:
Is acetaminophen conductive in water?
Answer:
Yes, acetaminophen is conductive in water.
Explanation:
Have a nice day!
Acetaminophen is conductive in water and it is electrochemically active. It is used as an antipyretic drug.
What is acetaminophen ?Acetaminophen is an organic compound containing the amine functional group. One of the most popularly prescribed analgesic and antipyretic medications, acetaminophen (AC), is thought to be both effective and safe.
AC is not poisonous or harmful when used rationally, but an overdose or continued use may cause nephrotoxicity and severe hepatotoxicity. As a result, AC monitoring is crucial for drug safety.
Various conductometric measurements reported the fair conductivity shown by acetaminophen in water. The intermolecular interaction of acetaminophen in water make it conductive.
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A volume is measured experimentally as
4.09 mL. What is the percent error, given
that the correct value is 4.13 mL?
Answer in units of %.
Answer:
The answer is 0.97 %Explanation:
The percentage error of a certain measurement can be found by using the formula
[tex]P(\%) = \frac{error}{actual \: \: number} \times 100\% \\ [/tex]
From the question
actual volume = 4.13 mL
error = 4.13 - 4.09 = 0.04
We have
[tex]p(\%) = \frac{0.04}{4.13} \times 100 \\ = 0.968523002...[/tex]
We have the final answer as
0.97 %Hope this helps you
