LATTICE ENERGY LECTURE 1

The equation below represents .........

Mg²⁺ (g) + 2Cl^- (g) --> MgCl (g)

• lattice energy

• enthalpy of formation

• enthalpy of atomisation

• electron affinity

Tags

NGSS.HS-PS1-4

Lattice energy becomes more exothermic when .......

• size of ions are small

• charge of ions are small

Lattice energy is always ...........

• endothermic

• exothermic

• can be both endothermic or exothermic

Tags

NGSS.HS-PS1-4

Enthalpy of atomisation is always ...........

• endothermic

• exothermic

• can be both endothermic or exothermic

Tags

NGSS.HS-PS1-4

Ionisation energy is always ...........

• endothermic

• exothermic

• can be both endothermic or exothermic

Tags

NGSS.HS-PS1-1

Going down the group ionisation energy increases.

• true

• false

Going across periodic table , ionisation energy increases.

• true

• false

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Second and third electron affinities are always exothermic.

• true

• false

What is the general trend of first electron affinity going down the group 16 (ignore the first period)?

• more negative

• less negative

• no change

enthalpy of formation is always exothermic

• true

• false