3.1

Question 1

what is first ionisation energy?

Answer 1

The energy needed to remove 1 mole of electrons from 1 mole of atoms in a gaseous state.

Question 2

what is electronegativity?

Answer 2

the ability of an atom to attract the pair of electrons in a covalent bond towards itself.

Question 3

what is a giant ionic lattice?

Answer 3

lattice of positive and negative ions and the electrostatic forces of attraction between them
regular/alternating/uniform arrangement

Question 4

What is periodicity?

Answer 4

REPEATING trends across a period.

Question 5

why is it bad to use ca(oh)2 to control acidic soils?

Answer 5

would result in soils becoming too alkaline to sustain plant growth.

Question 6

WHAT HAPPENS TO ATOMIC RADIUS ACROSS A PERIOD?

Answer 6

DECREASES!! SHELL DRAWN IN BY INCREASING NUCLEAR CHARGE.

Question 7

whY IS EACH SUCCESIVE IONISATION ENERGY HIGHER THAN THE PREVIOUS?

Answer 7

LESS ELECTRON ELECTRON REPULSION
ION IS SMALLER
SAME NUCLEAR CHARGE ATTRACTING LESS ELECTRONS

Question 8

WHAT ELEMENT HAS THE HIGHEST 1ST IONISATION ENERGY

Answer 8

HELIUM