Name any two elements of group one and write their electronic configurations. What similarity do you observe in their electronic configurations? Write the formula of oxide for any of the above said element.



1. Two elements of group 1 are: sodium (Na) and Potassium (K).

Electronic configuration of Na: 2, 8, 1

Electronic configuration of K: 2, 8, 8, 1

2. Similarity: they both have 1 electron in the outermost shell .

3. Na/K have a valency of 1 and O has a valency of 2. So the formula of oxide will be Na 2 O or K 2 O

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CA Maninder Singh is a Chartered Accountant for the past 14 years and a teacher from the past 18 years. He teaches Science, Economics, Accounting and English at Teachoo