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1. Which is a reactive non-metal atom? A. chlorine B. sodium Ans. 2. What will be formed when a reactive non-metal and reactive metal combined? Ans. B. What kind of compound is salt? Ans. 4. How many electron/s of sodium atom is/are capable of losing? Ans. 5. Oxygen atom is capable of gaining how many electrons? Ans. 5. What force of attraction holds atom together in a compound or molecules? Ans. 7. Differentiate covalent bond from ionic bond. Ans. Illustrate how covalent bonding takes place. 9. Illustrate how ionic bonding takes place.​