Question

Given below are two statements.
Statement-I: Stannane is an example of a molecular hydride.
Statement-II: Stannane is a planar molecule
In the light of the above statement, choose the most appropriate answer from the options given below.

• A. Both Statement-I and Statement-II are true
• B. Both Statement-I and Statement-II are false
• C. Statement-I is true but Statement-II is false
• D. Statement-I is false but Statement-II is true

Answer 1

The Correct Option is C

To determine the correct answer, we need to evaluate both statements individually based on known chemical facts and then compare them to the provided options.

Statement Analysis:

1. Statement-I: Stannane is an example of a molecular hydride.
   • Stannane, also known as tin hydride, has the chemical formula SnH₄.
   • Molecular hydrides are compounds formed between hydrogen and non-metals or more electropositive metals forming discrete molecules. Examples include CH₄ (methane), NH₃ (ammonia), and SnH₄ (stannane).
   • As SnH₄ is a discrete molecule and fits the criteria of a molecular hydride, Statement-I is true.
2. Statement-II: Stannane is a planar molecule.
   • The structure of SnH₄ is similar to that of CH₄ (methane), which is tetrahedral in shape.
   • In a tetrahedral structure, the molecule is not planar. Instead, it has four points at the corners of a tetrahedron with the central atom at the center.
   • Therefore, SnH₄ or Stannane is not a planar molecule, making Statement-II false.

Conclusion:

After analyzing both statements, we conclude that:

• Statement-I is true but Statement-II is false.

Thus, the most appropriate answer is: Statement-I is true but Statement-II is false.