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Among the following species, the least angle around the central atom is in
  • a)
    O3
  • b)
    I
    3
    -
  • c)
    NO-2
  • d)
    PH3
Correct answer is option 'D'. Can you explain this answer?
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Among the following species, the least angle around the central atom i...
According to drago's rule, element of third period and below than third period do not show hybridisation when they are bonded with atoms of less EN like Hydrogen so according to rule the bond angle of ph3 is approximately equal to 90 degree...
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Among the following species, the least angle around the central atom i...
Explanation:

Central Atom:
The central atom in a molecule is the atom to which other atoms are bonded. In order to determine the least angle around the central atom, we need to consider the number and type of atoms bonded to it.

Options:
a) O3 (Ozone)
b) I3- (Triiodide ion)
c) NO-2 (Nitrite ion)
d) PH3 (Phosphine)

Analysis:

Ozone (O3):
- Ozone (O3) consists of three oxygen atoms bonded together.
- Each oxygen atom is bonded to the other two oxygen atoms by a double bond.
- Therefore, the angle around the central oxygen atom in ozone is 120 degrees.

Triiodide ion (I3-):
- The triiodide ion (I3-) consists of three iodine atoms bonded together.
- Each iodine atom is bonded to the other two iodine atoms by a single bond.
- Therefore, the angle around the central iodine atom in the triiodide ion is 180 degrees.

Nitrite ion (NO-2):
- The nitrite ion (NO-2) consists of one nitrogen atom bonded to two oxygen atoms.
- The nitrogen atom is bonded to each oxygen atom by a single bond, and there is a lone pair of electrons on the nitrogen atom.
- Therefore, the angle around the central nitrogen atom in the nitrite ion is less than 120 degrees.

Phosphine (PH3):
- Phosphine (PH3) consists of one phosphorus atom bonded to three hydrogen atoms.
- Each hydrogen atom is bonded to the phosphorus atom by a single bond.
- Therefore, the angle around the central phosphorus atom in phosphine is less than 120 degrees.

Conclusion:
Among the given options, the molecule with the least angle around the central atom is PH3 (Phosphine). The angle around the central phosphorus atom in phosphine is less than 120 degrees.
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Among the following species, the least angle around the central atom is ina)O3b)I3-c)NO-2d)PH3Correct answer is option 'D'. Can you explain this answer?
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