PART-A
Instructions : (1) Answer all questions.
(2) Each question carries three marks.
(3) Answers should be brief and straight
and shall not exceed fwe simple sente
1. Write the electronic configuration of the following el
(a) Sodium(Na)
(b) Chromium(Cr)
(c) Copper(Cu)
2. Distinguish between oxidation number and valency.
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Explanation:
the answer is in the above image
valency and oxidation number is in same points joined
there is where as in between each point
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