The number of neutrons present in the more abundant isotope of boron is ' x '. Amorphous boron upon heating with air forms a product, in which the oxidation state of boron is ' y '. The value of is ...
- (A)4
- (B)6
- (C)3
- (D)9✓ Correct
Answer: (D)
Solution
The more abundant isotope of boron is , with neutrons , so . On heating in air, amorphous boron forms , in which boron is in the state, so . Therefore .
JEE Main · 2024 · 05 Apr 2024 · Shift 1 · Single correct option