A) \[C{{a}^{2+}}ions\]
B) \[C{{a}^{2+}}\]and \[M{{g}^{2+}}ions\]
C) \[M{{g}^{2+}}ions\]
D) \[F{{e}^{2+}}ions\]
Correct Answer: B
Solution :
| Ions | Important for |
| \[\text{C}{{\text{a}}^{\text{2+}}}\] | Muscle contraction and nerve impulse transmission |
| \[\text{M}{{\text{g}}^{\text{2+}}}\] | Muscle contration |
| \[\text{N}{{\text{a}}^{\text{2+}}}\] | Nerve impulse transmission |
| \[{{\text{K}}^{\text{+}}}\] | Nerve impulse transmission and muscle contraction |
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