Question

Which of the following belongs to same group n same period:A(Z=2),B(Z=10),C(Z=5)

Answer 1

Answer:

A and B belong to same group while B and C belong to same period

Explanation:

A(Z=2) is Helium

B(Z=10)is Neon

C(Z=5)is Boron

Both A and B belong to the same group that is the noble gases group or group 18/group 8A due to having same number of valence electrons.

while B and C belong to the same period that is the 2nd period due to having same number of electron shells in the atom.

Hope you understood and liked the answer.