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aev [14]
3 years ago
12

What trend does the first ionization energy follow, going down the periodic

Chemistry
2 answers:
-Dominant- [34]3 years ago
6 0

Answer:

C. The first ionization energy decreases because the outermost

electron is farther from the nucleus.

Explanation:

Ionization energy trend along group:

As we move down the group atomic radii increased with increase of atomic number. The addition of electron in next level cause the atomic radii to increased. The hold of nucleus on valance shell become weaker because of shielding of electrons thus size of atom increased.

As the size of atom increases the ionization energy from top to bottom also  decreases because it becomes easier to remove the electron because of less nuclear attraction and as more electrons are added the outer electrons becomes more shielded and away from nucleus.

Ionization energy trend along period:

As we move from left to right across the periodic table the number of valance electrons in an atom increase. The atomic size tend to decrease in same period of periodic table because the electrons are added with in the same shell. When the electron are added, at the same time protons are also added in the nucleus. The positive charge is going to increase and this charge is greater in effect than the charge of electrons. This effect lead to the greater nuclear attraction. The electrons are pull towards the nucleus and valance shell get closer to the nucleus. As a result of this greater nuclear attraction atomic radius decreases and ionization energy increases because it is very difficult to remove the electron from atom and more energy is required.

AleksandrR [38]3 years ago
6 0

Answer:

C

Explanation:

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the shape of the continents will continue to change, without even accounting for rising sea levels

Explanation:

5 0
3 years ago
What type of compound involves the transfer of electrons?
astra-53 [7]

Answer: Electrovalent or Ionic Compounds

Explanation:

Electrovalent Compounds Form bonds that are characterised by transfer of electrons from metallic atoms to non-metal licenses atoms during a chemical reaction.

The metallic atom after donating their valence electrons, become positively charged, while the non-metal license atoms becomes negatively charged after acquiring extra electrons.

A typical example of electrovalent compounds can be found between the association of Group 1(Alkali Metals) elements and the Group 7(Halogen Family) elements.

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3 years ago
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Question 14
Tema [17]

Answer:

.15625

Explanation:

for each gram there is .0625 molecules

4 0
3 years ago
Automotive airbags inflate when sodium azide NaN3 decomposes. In preparation of the
son4ous [18]

63.1 g of NaN3 is formed when 50.0 g of sodium is reacted with 40.5 g of nitrogen according to the balanced chemical reaction

The balanced reaction equation is;

2 Na + 3 N2--> 2 NaN3

Number of moles of Na =  50.0 g/23 g/mol = 2.17 moles of Na

Number of moles of Nitrogen = 40.5 g/28 g/mol = 1.45 moles of N2

We have to obtain the limiting reactant, this is the reactant that yields the least number of moles of product.

For Na

2 moles of Na yields 2 moles of NaN3

2.17 moles of Na yields 2.17 moles of NaN3 (reaction is 1:1).

For N2

3 moles of N2 yields 2 moles of NaN3

1.45 moles of N2 yields 1.45 * 2/3 = 0.97 moles of NaN3

So, N2 is the limiting reactant. Mass of product formed depends on the limiting reactant.

Mass of NaN3 = 0.97 moles of NaN3 * 65 g/mol = 63.1 g of NaN3

Therefore, 63.1 g of NaN3 is formed when 50.0 g of sodium is reacted with 40.5 g of nitrogen according to the balanced chemical reaction

Learn more: brainly.com/question/9743981

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2 years ago
Sucrose parafilm sulfur after sting heating what kind of of physical or chemical
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Answer:

e

Explanation:

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