Question

Q 31. An element is placed in the second group and third period of the periodic table and
in presence of Oxygen forms a basic oxide. (3)
(i) identify the element and write its electronic configuration.
(ii) Write a balanced chemical equation when it burns in the presence of air.
(iii) Draw the electron dot structure for the formation of this oxide.​

Answer 1

Answer:

(a) Magnesium

(b) 2, 8, 2

(c) 2Mg+O

2

→2MgO

(d) MgO+H

2

O→Mg(OH)

2

Explanation:

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