Question

The characteristics which remains same on moving down a sub-group:

• A. atomic size
• B. ionization potential
• C. valence shell electrons
• D. electronegativity

Answer 1

The correct option is C valence shell electrons

As we know, group element have same configuration $n{s}^{1-2}np1-6$ so as we move down the group, valence shell electrons remain same and other properties changes.