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Chapter 1: Q.1-1-25c (page 27)

Why can’t molecules with the following formulas exist

a) CH5 (b) C2H5N (c)C3H5Br2

Short Answer

Expert verified

Answer

The formula C3H5Br2can’t exist.

Step by step solution

01

Carbon Valency

Carbon can form four single bonds. In this case, one-carbon includes five bonds in one representation, which is impossible as carbon valency can’t exceed five.

02

Given molecule can’t exist

In other representation, carbon forms three bonds which are one bond less for its stability. The formula C3H5Br2requires that carbon exceeds four bonds or be short of two outer shell electrons.

The representation is as follows.

C3H5Br2Molecule can’t form

C3H5Br2Molecule can’t form

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