Which of the following pairs of cations cannot be separated by using an solution ?

CHEMISTRY · Single correct · ICSE · Chemistry · Analytical Chemistry · Analytical Chemistry

Problem

Which of the following pairs of cations cannot be separated by using an

NH_3

solution ? (1)

Pb^{2+}

Zn^{2+}

(2)

Pb^{2+}

Cu^{2+}

(3)

Zn^{2+}

Cu^{2+}

(4)

Al^{3+}

Ag^+