Question

The structure of AB2F2 molecule is : (a) Trigonal planar (b) Square pyramidal (c) Octahedral (d) Bent​

Answer 1

Answer:

d option is correct.

Explanation:

Bent shape formed

Answer 2

Final answer: The structure of $AB_{2}F_{2}$ is bent shape. Hence, correct answer is option (d) Bent.

Given that: We are given $AB_{2}F_{2}$ molecule.

To find: We have to find the structure of $AB_{2}F_{2}$ molecule from,

(a) Trigonal planar

(b) Square pyramidal

(c) Octahedral

(d) Bent​

Explanation:

• It is difficult to predict the shape of molecules where the central atom has lone pairs. This lone pairs are electrons which are more repulsive than bond pairs, hence they compress the bond angles in the molecules where they are present.
• For molecules where the central atom has lone pairs, general formula that also includes the lone pairs represented by $AB_{x}F_{y}$.

Where,

$A$ is central atom.

$B$ is outer atoms.

$x$ is the number of $B$ atoms.

$F$ is lone pairs on the central atom $A$.

$y$ is the number of lone pairs.

• The structure of $AB_{2}F_{2}$ is bent shape.

Let start with $AB_{4}$ molecule which is tetrahedral shape. When replace 2 $B$ atoms with 2 lone pairs ($F$), which is represented by $AB_{2}F_{2}$. Lone pair electrons repels with each other and the bonding electrons. The bond angle of $AB_{2}F_{2}$ is now less than $109.5\°$. Hence, correct answer is option (d) Bent.

• General formula of trigonal planar molecule is $AB_{3}$ but we are given $AB_{2}F_{2}$. Hence option (a) Trigonal planar, is wrong answer.
• General formula of square pyramidal molecule is $AB_{5}F$ but we are given $AB_{2}F_{2}$. Hence option (b) Square pyramidal, is wrong answer.
• General formula of octahedral molecule is $AB_{6}$ but we are given $AB_{2}F_{2}$. Hence option (c) Octahedral, is wrong answer.

To know more about the concept please go through the links

https://brainly.in/question/11663878

https://brainly.in/question/32046117

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