##BeCl_2## and his brother ##BeH_2##

[mooncrater]

Homework Statement

There was a question about $BeCl_2$ and $BeH_2$ which had a statement :
" Both have similar structure but different bonding. "
Which was marked correct.

Homework Equations

The Attempt at a Solution

The problem I am facing is that in the solution dotted lines are given between the B-H bond and solid arrows ($\longrightarrow$) for the B-Cl bond. So do those represent a hydrogen bond and a coordinate bond respectively?

 

[Raghav Gupta]

Homework Statement

There was a question about $BeCl_2$ and $BeH_2$ which had a statement :
" Both have similar structure but different bonding. "
Which was marked correct.

Homework Equations

The Attempt at a Solution

The problem I am facing is that in the solution dotted lines are given between the B-H bond and solid arrows ($\longrightarrow$) for the B-Cl bond. So do those represent a hydrogen bond and a coordinate bond respectively?

First hydrogen bond is for some specific atoms. What are those ?

 

[mooncrater]

F, O and N.

 

[Raghav Gupta]

F, O and N.

So what does it imply to your attempt?

 

[mooncrater]

So what does it imply to your attempt?

It doesn't form hydrogen bonds... so is it a covalent one?

 

[Raghav Gupta]

It doesn't form hydrogen bonds... so is it a covalent one?

Both BeCl2 and BeH2 are covalently bonded.
The main difference is one exists as a polymer.
The atom having lone pair can form dative or coordination bonds.