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20 December, 02:06

35 Which element reacts with oxygen to form ionic bonds? (1) calcium (3) chlorine

(2) hydrogen (4) nitrogen

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Answers (2)
  1. 20 December, 03:12
    0
    The answer is A.

    Calcium
  2. 20 December, 03:43
    0
    Calcium reacts with oxygen to form an ionic bond. An ionic bond by definition is the kind of chemical bond formed when there is a complete transfer of valence electrons from one atom to another, generating two oppositely charged ions. In ionic bonding, the metal loses electrons to become a positively charged cation, whereas the nonmetal accepts those electrons and becomes a negatively charged anion. Calcium has two electrons in its valence or outermost shell while oxygen has 6 electrons. Calcium gives up these two electrons and becomes positively charged and oxygen accepts them and becomes negatively charged forming an ionic bond resulting in a new compound called calcium oxide.
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