Question

(a) Arrange the following as given in the brackets: [4]

(i) Al, K, Mg, Ca, Na (decreasing order of ionisation energy)

(ii) Br, Cl, I, F (increasing order of electronegativity)

(iii) Mg, O, B, Cl (increasing order of atomic radius)

(iv) P, S, Cl, Si (decreasing order of reactivity)​

Answer 1

1. Ca>K>Al>Mg>Na

2. I<Br<Cl<F

3. B<Cl<O<Mg

4. Cl<S<P<Si

I hope this helps.