MCQ
Which one of the following is an $s$ - block element
- AAluminium
- BChromium
- CNiobium
- ✓Potassium
✓
Answer
Correct option: D.
Potassium
d
$(d)$ Potassium, $K - \left[ {Ar} \right]\,4{s^1}$.
$(d)$ Potassium, $K - \left[ {Ar} \right]\,4{s^1}$.
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