Addition of two electrons to the bismuth cluster Bi₅³⁺ results in a change of structure type from · ABC26IN1295

Subject: Inorganic Chemistry · Chapter: Main Group Elements · Topic: Ring Cage Cluster · Exam: CSIR NET JUNE 2017 · Marks: 2 · Difficulty: Medium

Addition of two electrons to the bismuth cluster $\mathrm{Bi_5^{3+}}$ results in a change of structure type from

(a)closo to nido

(b)nido to arachno

(c)closo to arachno

(d)arachno to hypho

Answer

Answer: A ✓ checked by 4AB · confidence high

Explanation

Bi₅³⁺ has 5×3 − 3 = 12 = 2n + 2 skeletal electrons (closo trigonal bipyramid); adding two gives 2n + 4, a nido square pyramid.

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