Which of the following compounds is not colored yellow ?
$(NH_4)_3 [As (Mo_3O_{10})_4]$
$BaCrO_4$
$Zn_2[Fe(CN)_6]$
$K_3[Co(NO_2)_6]$
Least reactive metal is
Solid $CuSO_4·5H_2O$ having covalent, ionic as well as co-ordinate bonds. Copper atom/ion forms ................. co-ordinate bonds with water.
When ammonia is added to a cupric salt solution, the deep blue colour is observed it is due to the formation of
Correct statement for $3d-$ series is
All the following statements about the transitional elements are true except that