Question
(a) Name one element in which the number of $s$ electrons is equal to the numbers of p-electrons.
(b) Tell the number of radial nodes in 1 s and 2 s orbitals.
(b) Tell the number of radial nodes in 1 s and 2 s orbitals.
✓
Answer
(a) Number of s and p electrons in magnesium is equal :
$
\begin{array}{l}
{ }_{12} Mg=1 s^2, 2 s^2, 2 p^6, 3 s^2(s \text { electron }= 6 \\
p \text { electron }=6)
\end{array}
$
(b) Number of radial nodes $= n -1$
Hence 1 s and 2 s , the number of radial nodes in the orbitals is zero and one.
$
\begin{array}{l}
{ }_{12} Mg=1 s^2, 2 s^2, 2 p^6, 3 s^2(s \text { electron }= 6 \\
p \text { electron }=6)
\end{array}
$
(b) Number of radial nodes $= n -1$
Hence 1 s and 2 s , the number of radial nodes in the orbitals is zero and one.
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