Question

Hydrogen rarely occurs in the free state because:

• A. it is highly reactive.
• B. it is a gas
• C. its atomic number is 1.
• D. it has three isotopes.

Answer 1

The correct option is A it is highly reactive.

Hydrogen is rarely found in its free state as it is a highly reactive non-metal and is often found in combined form with other elements. Eg, water ($H_{2}O$), dihydrogen sulphide ($H_{2}S$), etc.