Molecular Structure

Question 0

Why do atoms bond?

Answer 0

To stabilise, atoms want to obtain the lowest potential energy to be have the octet structure.

Question 1

What is a covalent bond and how is it characterised?

Answer 1

When two non-metals bond together a covalent bond is formed. This bond is characterised by electrons involved in the bond being shared between the atoms involved.

Question 2

What is electronegativity?

Answer 2

It is the force of attraction for a bonding pair

Question 3

What is an ionic bond and how is it characterised?

Answer 3

An ionic bond is when a non-metal and a metal bond. This is characterised by the electrons from the metal being transferred to the non-metal and this creates a positive and negative ion which then electrostatic ally attract to one another.

Question 4

What is a metallic bond and what is it characterised by?

Answer 4

A bond between two metals and it is characterised by the positive atomic core surrounded by the sea of delocalised electrons.

Question 5

Linear

Answer 5

Only two atoms involved..
1 bonding pair of electrons HCl
2 or 4 bonding pairs… No lone pairs CO2

Question 6

Angular

Answer 6

2 bonding pairs and 2 lone pairs for H2O

Question 7

Trigonal planar

Answer 7

BF3 it is a flat molecule. No lone pairs

Question 8

Pyramidal

Answer 8

NH3… 1 lone pair.

Question 9

Tetrahedral

Answer 9

No lone pairs. 4 bonding pairs… Remember! VSPERT*

Question 10

Why is polarity important

Answer 10

Polarity depends on the intermolecular forces…