Solution:
Number of shells increases size increases down the group in alkali metals.
cation size, hence Mg2+ ion has pairing with Br- has minimum melting point.
Which of the fallowing has pairing with Br- has minimum melting point?
Number of shells increases size increases down the group in alkali metals.
cation size, hence Mg2+ ion has pairing with Br- has minimum melting point.