Four elements A, B, C, and D have the following electronic configuration:
A: 2, 6
B: 2, 8
C: 2, 8, 8, 1

i. Which element is an inert gas?
ii. What type of bond is formed when element C combines with element A?
iii. What will be the formula of the compound formed between A and C?

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Solution

i. Element 'B' (electronic configuration: 2, 8) is an inert gas.
ii. Ionic bond is formed between element 'C' and element 'A'.
iii. $C_{2} A$ is the formula of the compound formed between A and C.

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i. Element 'B' (electronic configuration: 2, 8) is an inert gas. ii. Ionic bond is formed between element 'C' and element 'A'. iii. C2A is the formula of the compound formed between A and C.

i. Element 'B' (electronic configuration: 2, 8) is an inert gas.
ii. Ionic bond is formed between element 'C' and element 'A'.
iii. $C_{2} A$ is the formula of the compound formed between A and C.