Given below are certain basic radicals. Based on inorganic qualitative analysis, arrange them in increasing order of their group number.
A. $\mathrm{Zn}^{2+}$
B. $\mathrm{Sr}^{2+}$
C. $\mathrm{As}^{3+}$
D. $\mathrm{NH_4}^{+}$
E. $\mathrm{Cr}^{3+}$
Choose the correct answer from the options given below.

Question

Given below are certain basic radicals. Based on inorganic qualitative analysis, arrange them in increasing order of their group number.
A.

\mathrm{Zn}^{2+}

B.

\mathrm{Sr}^{2+}

C.

\mathrm{As}^{3+}

D.

\mathrm{NH_4}^{+}

E.

\mathrm{Cr}^{3+}

Choose the correct answer from the options given below.

Quantrex Academy · Accepted Answer

Correct answer: B. D, C, E, A, B

In inorganic qualitative analysis, the basic radicals are classified into different groups based on their precipitation reactions.

The group assignments for the given radicals are:

\mathrm{NH_4}^{+}

belongs to Group 0.

\mathrm{As}^{3+}

belongs to Group II.

\mathrm{Cr}^{3+}

belongs to Group III.

\mathrm{Zn}^{2+}

belongs to Group IV.

\mathrm{Sr}^{2+}

belongs to Group V.

Arranging them in increasing order of their group numbers, we get Group 0 < Group II < Group III < Group IV < Group V.

This corresponds to the sequence D, C, E, A, B.

Answer: D, C, E, A, B

Given below are certain basic radicals. Based on inorganic...

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