Identify any two pairs of elements that will react to form compounds by a transfer of electrons.

Question

The electronic configuration of some elements is given in the table below.

Element	Electronic configuration
P	2, 8, 8
Q	2, 8, 8, 1
R	2, 6
S	2, 5
T	2, 8, 2
U	2, 8, 7

(a) Identify any two pairs of elements that will react to form compounds by a transfer of electrons. 

(b) Write the molecular formula of the compounds formed by the pairs of elements identified in (a).

Answer 1

(a) Two correct pairs of elements identified such as: - 

Q and R  

Q and U  

T and R 

T and U 

(b) The formula for two compounds such as: Q₂R, QU, TR and TU₂