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Which one of the following molecules is planar?
- a)NF3
- b)NCl3
- c)PH3
- d)BH3
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Which one of the following molecules is planar?a)NF3b)NCl3c)PH3d)BH3Co...
- NF3,NCl3,PH3 - They all have trigonal pyramidal geometry.
- They all have a lone pair of electrons on their central atom.
- Whereas BH3 does not have a lonee pair, and is planar.
Most Upvoted Answer
Which one of the following molecules is planar?a)NF3b)NCl3c)PH3d)BH3Co...
Explanation:
Planarity in molecules:
In chemistry, a molecule is considered planar if all of its atoms lie in a single plane.
Analysis of the molecules:
Let's analyze each of the given molecules to determine their planarity.
NF3:
NF3 is a trigonal pyramidal molecule, where the N atom is bonded to three F atoms. Due to the lone pair on the N atom, the molecule is not planar.
NCl3:
NCl3 is also a trigonal pyramidal molecule similar to NF3, where the N atom is bonded to three Cl atoms. Just like NF3, the lone pair on the N atom causes it to be non-planar.
PH3:
PH3 is a trigonal pyramidal molecule where the P atom is bonded to three H atoms. The lone pair on the P atom makes it non-planar.
BH3:
BH3 is a trigonal planar molecule, where the B atom is bonded to three H atoms. The absence of a lone pair on the B atom allows all the atoms to lie in a single plane, making it planar.
Therefore, among the given molecules, only BH3 is planar, while NF3, NCl3, and PH3 are non-planar due to the presence of a lone pair on the central atom.
Planarity in molecules:
In chemistry, a molecule is considered planar if all of its atoms lie in a single plane.
Analysis of the molecules:
Let's analyze each of the given molecules to determine their planarity.
NF3:
NF3 is a trigonal pyramidal molecule, where the N atom is bonded to three F atoms. Due to the lone pair on the N atom, the molecule is not planar.
NCl3:
NCl3 is also a trigonal pyramidal molecule similar to NF3, where the N atom is bonded to three Cl atoms. Just like NF3, the lone pair on the N atom causes it to be non-planar.
PH3:
PH3 is a trigonal pyramidal molecule where the P atom is bonded to three H atoms. The lone pair on the P atom makes it non-planar.
BH3:
BH3 is a trigonal planar molecule, where the B atom is bonded to three H atoms. The absence of a lone pair on the B atom allows all the atoms to lie in a single plane, making it planar.
Therefore, among the given molecules, only BH3 is planar, while NF3, NCl3, and PH3 are non-planar due to the presence of a lone pair on the central atom.
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Community Answer
Which one of the following molecules is planar?a)NF3b)NCl3c)PH3d)BH3Co...
- NF3,NCl3,PH3 - They all have trigonal pyramidal geometry.
- They all have a lone pair of electrons on their central atom.
- Whereas BH3 does not have a lonee pair, and is planar.
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