Few statements are given regarding nodes in the orbitals. Mark th… - Vidyadip

MCQ

Few statements are given regarding nodes in the orbitals. Mark the statement which is not correct.

A
In case of $p_z-$ orbital, $xy$ plane is a nodal plane
✓
$ns -$ orbital has $(n + 1)$ nodes.
C
The number of angular nodes is given by $l$.
D
The total number of nodes is given by $(n -1)$

✓

Answer

Correct option: B.

$ns -$ orbital has $(n + 1)$ nodes.

b
In case of $p _{ z }$ orbital, lobes are along $z -$ axis and thus $x - y$ plane is a nodal plane.

For, $ns$ - orbital total number of nodes $=n-1$

where angular nodes $=l$ and number of radial nodes $=n-l-1$

Thus, the total number of nodes is given $=$ angular nodes $+$ radial nodes $= n -l-1+l=n-1$

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