The number of white coloured salts, among the following is _______.
(a) \( \mathrm{SrSO_4} \) (b) \( \mathrm{Mg(NH_4)PO_4} \) (c) \( \mathrm{BaCrO_4} \) (d) \( \mathrm{Mn(OH)_2} \)
(e) \( \mathrm{PbSO_4} \) (f) \( \mathrm{PbCrO_4} \) (g) \( \mathrm{AgBr} \) (h) \( \mathrm{PbI_2} \)
(i) \( \mathrm{CaC_2O_4} \) (j) \( [\mathrm{Fe(OH)_2(CH_3COO)}] \)
