atomic structure

Question 1

explain, in terms of its structure and bonding, why nickel has a high melting point
(2)

Answer 1

strong metallic bonding between positive ions and delocalised sea of electrons

Question 2

explain why nickel is ductile (can be stretched into wires)
(1)

Answer 2

layers of atoms/ ions can slide over one another

Question 3

isotope

Answer 3

atoms with same number of protons but diff number of neutrons

Question 4

why must the sample be ionised using a mass spectrometer

Answer 4

1) to accelerate/ make them go faster

2) to deflect/ to bend the beam