Question

Choose from the following : 6C, 8O, 10Ne, 11Na, 14Si.

A. Element that should be in the same period.
B.Element that should be in the same group.
And also state reason for your selection in each case​

Answer 1

C, O and Ne.

Na and Si

in the same period as they have same number of orbits or shell .

C and Si in the same group as they have same no of valence electron.

hope it helps..........