what is the trend of acidity , basicity , reducing nature down the group in group 15 ,16,17,18 members ?
When comparing atoms within the same row of the periodic table, the more electronegative the atom donating the electrons is, the less willing it is to share those electrons with a proton, so the weaker the base.
Reducing nature:-- When any molecule reduces another molecule, it itself gets oxidise. the reducing nature increases as ionisation energy decreases. So, as moving down, the size increases, so IE decreases, and hence, reducing nature increases.