AIIMS 2019 Chemistry VSEPR Theory MCQ Question
Assertion: molecule has see-saw geometry.
Reason: In molecule sulphur has four bond pair and one lone pair.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Correct Answer
Detailed Explanation
In SF₄, sulfur (S) has four bond pairs and one lone pair, resulting in a trigonal bipyramidal electron geometry. The presence of the lone pair distorts the shape to a see-saw configuration, which is characteristic of molecules with five regions of electron density. Other options are not applicable as they do not provide relevant information or alternative structures for SF₄, which is specifically defined by its unique bonding and lone pair arrangement. Understanding the VSEPR theory helps in predicting molecular shapes based on electron pair repulsion.
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