Question

A molecule which can't exist theoretically is- sf4, of2, of4, o2f2

Answer 1

Answer :

OF₄ can not exist theoretically.

Oxygen : It belongs to VI A group, or 16 group.

It's electronic configuration is, 2, 8, 6.

Valence = 8 - 6 = 2.

So, Oxygen may exhibit a valency of 2 at maximum.

Fluorine being 17 th Group element. Valency is 1.

In OF₂,

Valency of Oxygen is 2

Valency of Fluorine is 1.

Both are theoretically possible. Hence, The molecule exists.

In O₂F₂ ,

Valency of Fluorine = 1

Valency of Oxygen = 1

Both are theoretically possible. Hence, The molecule exists.

In OF₄,

Valency of Fluorine = 1

Valency of Oxygen = 4

Oxygen can't exhibit 4 valency, Hence the molecule doesn't exist

In SF₄,

Valency of Fluorine = 1,

Valency of Sulphur = 4

Sulphur due to incomplete d orbitals can exhibit 2, 4, 6 valency in excited states . Hence the molecule exists.

Answer 2

Answer:

i cannot understand

Explanation:

plse tell clear