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

Hello!!!

Your answer is:

A) 6C , 8O and 10Ne should lie in the same period because they have the same number of shells in their atoms.

B) 6C and 14Si lie in the same group because they have the same number of valence electrons in their outermost shell. ( 4 valence electrons )

Hope it helps!!!!!

Cheers ☺☺☺☺☺

Answer 2

A) 6C, 8O and 10Ne should lie in the same period, and 11Na and 14 Si in same period.

This is because they have the same number of shells in their atoms.

B) 6C and 14Si should be in the same group, as they have the same number of valence electrons in their outermost shell with 4 valence electrons each.