How is the number of valence electrons related to the ionization energy of an element?A) low ionization energy correlates to elements with fewer valence electrons
B) elements with higher ionization energy tend to have less valence electrons
C) atoms with nearly full valence electrons shells have lowers ionization energy
D) high ionization energy indicated a low likelihood to gain valence electrons

Answers

Answer 1

Answer: The number of valence electrons is related to the ionization energy of an element such that when there is few valence electrons, the ionization energy of an element is lower. The trend on the periodic table follows that the ionization energy fairly increases as the number of valence electron increases. Therefore the correct answer is letter "A."

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Limestone is primarily a crystal form of caco 3 . How many moles of oxygen are in a 1.25 mol sample of caco 3 ? Only include the numerical value in your answer. Do not include units.

Answers

There are 3.75 moles of oxygen in a 1.25 mol sample of CaCO₃.

Limestone is primarily a crystal form of CaCO₃ (calcium carbonate). According to its chemical formula, the molar ratio of CaCO₃ to O is 1:3. The moles of oxygen in 1.25 moles of CaCO₃ are:

$1.25 mol CaCO_3 * (3molO)/(1molCaCO_3) = 3.75molO$

There are 3.75 moles of oxygen in a 1.25 mol sample of CaCO₃.

You can learn more about molar ratios here: brainly.com/question/9408497

As the molecular formula of CaCO₃ suggested, that there are 3 moles of oxygen are there in 1 mole of CaCO₃.

So in 1.25 mol of CaCO₃ contains=1.25 ×3 moles of oxygen

=3.75 moles of oxygen

So there are 3.75 moles of oxygen are there in 1.25 mol of CaCO₃.

Which of the following would be an example of applied science?

Answers

Answer:

Applied science is generally engineering, which develops technology, although there might be dialogue between basic science and applied science (research and development). Medical sciences such as medical microbiology are examples of applied sciences.

Explanation:

Write a nuclear equation for the fusion of two h−2 atoms to form he−3 and one neutron.

Answers

'Heavy' hydrogen (the isotope deuterium) , 2/1H is involved ,

[2= mass number, 1= atomic (proton) number]

2/1H + 2/1H → 3/2He + 1/0n

What is the symbol for magnesium

Answers

A symbol is used for an element to make things much easier in chemical equations. The chemical symbol for Magnesium is Mg.

Answer: Mg

Mg, the symbol is Mg, not to be confused with manganese which is MN but has tripped me up many times.

How many electrons does calcium lose when forming an ionic bond with another ion?a. 1
b. 2
c. 3
d. 4

Answers

The correct answer is answer choice B, 2. Calcium is in Column 2, meaning that it has 2 electrons in its outermost energy level. These two electrons must be lost for it to form an ionic bond with another element and become stable.

Questions like these can be easily answered if you have a periodic table on hand. Elements in Column 1 need to lose 1 electron to form ionic bonds, elements in Column 2 need to lose 2, and so on. Keep in mind, however, that elements in the center of the table are more likely to form metallic or covalent bonds, and elements in Columns 16 and 17 need to gain 2 and 1 electrons, respectively.

Which of the following explains why hot liquids have a greater average energy of motion than cold liquids? *Hot liquids have more electrons
Cold liquids have more electrons.
Particles in hot liquids move faster than particles in cold liquids
Particles in cold liquids move faster than particles in hot liquids.

Answers

Particles in hot liquids move faster than particles in cold liquids. The faster a particle moves, the greater its kinetic energy.

The number of electrons in a particle has nothing to do with its kinetic energy.

Particles in cold liquids move more slowly than particles in hot liquids.

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