Question

among following molecules, select molecule in which all atoms lie in one plane : a) NH3 b) BCl3 c) CCl4 d) XeF6​

Answer 1

Answer:

BCl3

Explanation:

BCl3 has no LPE in the centre, and hence is Trigonal Planar

NH3 has 1 pair of LPE, and hence, the structure is trigonal bipyramidal.

CCl4 has 4 Cl atoms, and the most stable is tetragonal for the same.

In XeF6, Xe is attached to 6 F atoms, and since Xenon is a noble gas, it'll have 8 electrons in the outermost shell, and you will have a LPE left, which causes distortion to the figure. If there was no LPE, the structure would be an octahedral. But since there is a LPE< it'll be a distorted octahedral.

Answer 2

The molecule in which all atoms lie in one plane is$BCl_3$. (OPTION B)

HYBRIDIZATION -

• The mixing of atomic orbital to form new orbitals of different bonding properties.
• The hybrid orbitals are formed by combining orbitals of similar energy.
• Hybridization helps in determining the shape of the molecules.
• The hybridization in $BCl_3$ is $sp^2$.
• The shape of the molecules is planar and forms trigonal pyramidal.
• One s orbital combines with p orbit to form $sp^2$ hybrid orbit.
• All the three orbitals lie in one plane at an angle of 120 degrees to each other.