Chemistry
Taking MgCl2, as an example of electrovalent bond, CCl4 as a covalent bond. Give a difference between electrovalent and covalent bonds.
Answer
Magnesium loses its two valence electrons to acquire a stable octet. The two chlorine atoms accept one each of these electrons to acquire a stable octet. Thus, electrovalent bond in MgCl2 is formed by transfer of electrons.
When a molecule of CCl4 is to be formed, one atom of carbon shares four electron pairs, one with each of the four atoms of chlorine. Thus, covalent bond is formed by sharing of electrons.
Related Questions
The atomic species X and Y have different number of protons but the same number of nucleons. While atoms A and B have the same number of protons but different number of nucleons.
(a) Which of them are
(i) isotopes
(ii) isobars ?
(b) Give one example of each.
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(a) How many electrons are shared in each?
(b) Give an example of each type.
Give orbital diagram of the following :
(a) magnesium chloride,
(b) nitrogen
(c) methane
(d) hydrogen chloride
Metal M forms a chloride with the formula MCl2. What type of bond is in MCl2? Write the formula of the compound when M combines with sulphur, oxygen and nitrogen.