Question

What is the three-dimensional shape of the molecule with this Lewis structure.

Answer 1

I would have to say B. Linear

I hope this helps!

Cheers, July.

Answer 2

Answer : The correct option is, (B) Linear

Explanation :

Formula used  :

$\text{Number of electrons}=\frac{1}{2}[V+N-C+A]$

where,

V = number of valence electrons present in central atom

N = number of monovalent atoms bonded to central atom

C = charge of cation

A = charge of anion

Now we have to determine the hybridization of the $BeH_2$  molecules.

$\text{Number of electrons}=\frac{1}{2}\times [2+2]=2$

The number of electrons is 2 that means the hybridization will be $sp$ and the electronic geometry of the molecule will be linear.

The three-dimensional shape of the molecule with the Lewis structure are shown below.