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Yellow compound of lead chromate gets dissolved on treatment with hot \(\mathrm{NaOH}\) solution. The product of lead fo…

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Yellow compound of lead chromate gets dissolved on treatment with hot \(\mathrm{NaOH}\) solution. The product of lead formed is a

[JEE Main 2024, 27 Jan (Shift 1)]

a

Dianionic complex with coordination number four

b

Neutral complex with coordination number four

c

Tetraanionic complex with coordination number six

d

Dianionic complex with coordination number six

✓ Correct answer: a)

Dianionic complex with coordination number four

Explanation

:\({\text{PbCrO}}_{4}+4\text{ }\text{NaOH (hot, excess)}\text{  }⟶\text{  }{\text{Na}}_{2}[{\text{Pb(OH)}}_{4}]+{\text{Na}}_{2}{\text{CrO}}_{4}\)
\([{\text{Pb(OH)}}_{4}{]}^{2−}\) is a dianionic complex with coordination number = 4.

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