How do you classify elements into metals and non-metals on the basis of their electronic configuration?

CBSE Class 10 CBSE Class 10 Science
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  1. How do you classify elements into metals and non-metals on the basis of their electronic configuration? Choose metal and non-metal out of the following:
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  2. What type of bond will be formed if

(a) ‘A’ combines with ‘B’?
(b) ‘A’ combines with ‘E’?
© ‘C’ combines with ‘E’?
(d) ‘D’ combines with ‘E’?

Answer:

  1. Elements which contain 1 to 3 electrons in their outermost shell are metals.
    Elements containing 4 to 7 electrons in their valence shell are non-metals.
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    Hence A and C are metals whereas, B, D and E are non-metals.
  2. Type of bonds
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