Question

Consider the nuclear change
${}_{93}^{237}X\stackrel{-\alpha }{\to }A\stackrel{-\beta }{\to }B\stackrel{-\alpha }{\to }C$
Which of the following statements is not correct?

• A. Mass number of B is 233
• B. Atomic number of A is 91
• C. C is an isotope of A
• D. B is an isobar of A

Answer 1

The correct option is C C is an isotope of A

${}_{93}{X}^{237}{\stackrel{-\alpha }{\to }}_{91}{A}^{233}{\stackrel{-\beta }{\to }}_{92}{B}^{233}{\stackrel{-\alpha }{\to }}_{90}{C}^{229}$

(Isotopes have same atomic number but different mass number)