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ruslelena [56]
3 years ago
15

Classify each of the molecules given below by molecular shape.

Chemistry
1 answer:
maw [93]3 years ago
4 0
Missing question find on internet.
Answers are:
1) O₂ - linear.
2) CH₄ - tetrahedral.
3) SO₃ - t<span>rigonal planar.
4) SF</span>₄ - <span>trigonal bipyramidal.
5) BeF</span>₂ - linear.
6) SiCl₄ - <span>tetrahedral.
7) ClF</span>₃ - <span>T-shaped.</span><span>
8) CO</span>₂ - linear.
9) NH₃ - <span>trigonal pyramidal.
10) SO</span>₂ - bent.
11) H₃O⁺ - <span>trigonal pyramidal.
12) XeF</span>₄ - <span>square planar.
13) H</span>₂O - bent.

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Compare which element would have larger first ionization energy: an alkali metal in Period 2 or an alkali metal in Period 4?
maria [59]

Answer:

An alkali metal present in period 2 have larger first ionization energy.

Explanation:

Ionization energy:

The amount of energy required to remove the electron from the atom is called 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.

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.  Thus alkali metal present in period 2 have larger ionization energy because of more nuclear attraction as compared to the alkali metal present in period 4.

6 0
2 years ago
What is the period number in which helium is found
julsineya [31]

Answer:

Helium is the second element on the periodic table. It is located in period 1 and group 18 or 8A on the righthand side of the table. This group contains the noble gases, which are the most chemically inert elements on the periodic table. Each He atom has two protons and usually two neutrons and two electrons.

Explanation:

thoughtco.com

6 0
3 years ago
Read 2 more answers
If element X has 83 protons, how many electrons does it have? ______ electrons
Zolol [24]
The element has 83 electrons
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Anybody know the answer to this
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Steroids and triglycerides are lipids.

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8 0
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Why does Richard Rhodes think nuclear power is important moving forward?
professor190 [17]

<em>Nuclear power releases less radiation into the environment than any other major energy source.</em>

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3 years ago
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