18. (a) Name the charged particles which attract one
another to form electrovalent compounds. fönster
(b) In the formation of electrovalent compounds,
electrons are transferred from one element to
another. How are electrons involved in the formation
of a covalent compound ?
(c) The electronic configuration of nitrogen is (2, 5).
How many electrons in the outer shell of a nitrogen
atom are not involved in the formation of a nitrogen
molecule ?
(d) In the formation of magnesium chloride (by direct
combination between magnesium and chlorine),
name the substance that is oxidized and the
substance that is reduced.
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Answer:
cations and anions
mutual sharing of electron
4e
magnesium oxidized
chlorine reduced
Explanation:
like NAcl is an electrovalent compound composed of Na+ ions(cations) and cl-(anions)
formation of N2 molecules 3 bonds formed and each bond require 2 e so each nitrogen uses 3 e 4 remain
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