Question

Question: 23
With radioactive isotope technique it was
confirmed that phosphorous pentachloride
possess --- structure
O Trigonal bipyramidal
O Pentagona!
O Planar
Tetrahedral

​

Answer 1

Phosphorous pentachloride possesses trigonal bipyramidal shape. It is non-combustible in nature.

$PCl_{5}$ trigonal bipyramdal symmetry

• $PCl_{5}$ lewis structure is comprised of five P-Cl bonds, with a phosphorus (P) molecule in a focal position and each of the 5 chlorine (Cl) as external iotas in the lewis chart. The lewis construction of $PCl_{5}$ contains a sum of 5 bond matches and 15 solitary pairs(3 solitary matches on every chlorine molecule).

• as per the VSEPR hypothesis, a particle having 5 bond matches is supposed to have a three-sided bipyramidal shape. Thus, this is the state of PCl5.
• In the event that we notice the 3 molecules to be specific the Cl-P-Cl organized straightly in the center, these 2 chlorine iotas are known as the hub iotas though assuming you notice the other 3 chlorine particles organized along the x-axis in a three-sided planar shape, these Cl particles are the tropical molecules.

• The point between a pivotal and a tropical particle is 90 °. Which makes the point between the two pivotal molecules to be 180°. The point between 2 tropical particles is 120°.

(#spj3)