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Burka [1]
3 years ago
15

Which element most likely has the same number of valence electrons as silicon(si)?

Chemistry
1 answer:
Blizzard [7]3 years ago
7 0

Answer:

Carbon, germanium, tin and lead.

Explanation:

The silicon is belong to the carbon family. There are five elements in carbon family carbon, silicon, germanium, tin and lead. These five elements are present in same group i.e group fourteen. The elements present in same group have same number of valance electrons.

For example.

Carbon electronic configuration:

C₆ = [He]  2s² 2p²

Silicon electronic configuration:

Si₁₄ = [Ne] 3s² 3p²

Germanium electronic configuration:

Ge₃₂ = [Ar] 3d¹⁰ 4s² 4p²

Tin electronic configuration:

Sn₅₀ = [Kr] 4d¹⁰ 5s² 5p²

Lead electronic configuration:

Pb₈₂ = [Xe] 4f¹⁴ 5d¹⁰ 6s² 6p²

we can see that in case of all elements there are four valance electrons, which are equal to the valance electrons of silicon.

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This reaction is exothermic because the system shifted to the left on heating.

Explanation:

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Product => N₂O₄ (colorless)

From the question given above, we were told that when the reaction at equilibrium was moved from room temperature to a higher temperature, the mixture turned dark brown in color.

This simply means that the reaction does not like heat. Hence the reaction is exothermic reaction.

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The reaction is exothermic because the system shifted to the left on heating.

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Why is it important to have the correct bond angles of the different atoms and the shape of the molecule? (20 points NEED ANSWER
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                  Other properties which can also be predicted by predicting the bond angles along with molecular geometries are;

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