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16 January, 13:39

1.15 g of a metallic element reacts with 300cm3 of oxygen at 298K and 1 atm pressure, to form an oxide which contains O2 - ions.

What could be the identity of the metal?

A calcium

B magnesium

C potassium

D sodium

Answers (1)
  1. B
    16 January, 15:26
    0
    The metal is D. Sodium.
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