(a)[2]
Give the equation for the first ionisation energy of sulfur, and include the state symbols.
(b)[3]
Explain why first ionisation energies generally increase across the Period from sodium to argon.
(c(i))
Explain why magnesium has a greater first ionisation energy than aluminium.
(c(ii))[4]
Explain why phosphorus has a greater first ionisation energy than sulfur.
(d(i))[3]
Complete the ‘conductivity’ row using only the words ‘high’, ‘moderate’ or ‘low’.
(d(ii))[2]
Complete the ‘melting point’ row using only ‘high’ or ‘low’.
(e)[1]
Using the properties of the third Period elements aluminium to chlorine, suggest the identity of the fourth Period element E.