A. Ca²+ and Zn²+
B. Cu²+ and Na+
C. Mg²+ and Ca²+
D. Fe²+ and Na+
E. Zn²+ and Cu²+
Correct Answer:
Option C – Mg²+ and Ca²+
A. Ca²+ and Zn²+
B. Cu²+ and Na+
C. Mg²+ and Ca²+
D. Fe²+ and Na+
E. Zn²+ and Cu²+
Correct Answer:
Option C – Mg²+ and Ca²+
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