The answer is B. Cs (Caesium) and O (Oxygen).
What is Ionic Bond?
- A bond that occurs between a metal and non-metal atoms (element).
P (Phosphorus) - non-metal
O (Oxygen) - non-metal
Cs (Caesium) - metal
O (Oxygen) - non-metal
Li (Lithium) - metal
Mg (Magnesium) - metal
Ne (Neon) - non-metal
Cl (Chlorine) - non-metal
- Hope it helps.
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