Question

An element X with electronic configuration 2,8,2 ionizes to a configure of 2,8 when it combines with another element Y of configuration 2,8,7.
1. State the type of bonding formed between the two elements.
2. Write a simple ionic equation to represent the ionization of X
3. How many atom(s) of Y are needed for the combination?
4. Which of the two atoms has the higher electronegativity
5. Name one element that X could combine with in a 1 to 1 ratio.

Answer 1

Answer:

(i) ionic

(ii) X --> X^2+ + 2e

(iii) Y + e ==> Y^- so two atoms of Y are needed to combine with 1 atom X.

(iv) Probably X is Mg. Probably Y is Cl. Cl could combine in a 1:2 ratio to form MgCl2