Which of the elements in Group $1 A$ of the periodic table has the greatest metallic character?

H

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L i

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N a

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K

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R b

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Solution

The correct option is E $R b$
Metallic character increases down the group. As the atomic radius increases, the loss of electrons becomes easier. So the element at the bottom of group IA is most metallic.

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Consider the following elements :

Na, Ca, Al, K, Mg, Li

(a) Which of these elements belong to the same period of the periodic table?

(b) Which of these elements belong to the same group of the periodic table?

Name

(a) An alkali metal in period 3 and halogen in period 2.

(b) The noble gas with 3 shells.

(d) The element of period 3 with valency 4.

(e) The elements i period 3 which does not form oxide.

(f) The element of lower nuclear charge out of Be and Mg.

(g) Which has higher E.A., Fluorine or Neon.

(h) Which has maximum metallic character Na, Li or K.

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