Atomic number of a few elements are given below 10,20, 7, 14
(a) Identify the elements
Ans. Neon (10), calcium (20), Nitrogen (7) and Silicon (14)
(b) Identify the Group number of these elements in the Periodic Table
Ans. Neon belongs to group 18, calcium belongs to group 2, nitrogen belongs to group 7 and silicon belongs to group 14.
(c) Identify the Periods of these elements in the Periodic Table
Ans. Nitrogen and Neon belong to period 2. Calcium and Silicon belong to period 3.
(d) What would be the electronic configuration for each of these elements?
Ans. Ne: 2, 8
Ca: 2, 8, 8, 2
N: 2, 5
Si: 2, 8, 4
(e) Determine the valency of these elements
Ans. Ne: O, Ca: 2, N: 3 and Si: 4
