Mass spectrum of a compound shows [M²⁺] ion peak that is about 4% of M⁺. This indicates that the compound has one-

Q56 · CSIR-NET Chemistry, June 2018

Paper: CSIR-NET June 2018 · Subject: Organic Chemistry · Chapter: Organic Spectroscopy · Topic: Mass Spec · Marks: 2 · Difficulty: Medium

Mass spectrum of a compound shows $\left[M^{2+}\right]$ ion peak that is about $4 \%$ of $M^{+}$. This indicates that the compound has one-

(a)fluorine

(b)sulfur

(c)bromine

(d)chlorine

Answer

Answer: B ✓ checked by 4AB · confidence high

The two source books printed different answers; this one was worked out and checked — see the explanation.

Explanation

An M+2 peak of ~4.4 % per atom is characteristic of one sulfur (³⁴S) (b).

Study loop for Organic Spectroscopy