Q Name the following:
(a) An alkali metal in period 3 and halogen in period 2. 
(b) The noble gas with 3 shells. 
(c) The non-metals present in period 2 and metals in period 3. 
(d) The element of period 3 with valency 4. 
(e) The element in 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.

Dear Student,

The solution to your query has been provided below:
(a) Alkali metal in period 3 - Sodium 
     Halogen in period 2 - Fluorine
(b) Noble gas having 3 shells - Argon
(c) Non metals in period 2 - Carbon, Nitrogen, Oxygen, Fluorine
      Metals in period 3 - Sodium, Magnesium, Aluminium
(d) An element in period 3 and with valency 4 - Silicon
(e) An element in period 3 that does not form an oxide - Argon

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(a) Alkali metal in period 3 - Beryllium 
     Halogen in period 2 - Fluorine
(b) Noble gas having 3 shells - Argon
(c) Non metals in period 2 - Carbon, Nitrogen and Oxygen
      Metals in period 3 - Sodium, Magnesium and Aluminium
(d) An element in period 3 and with valency 4 - Silicon
(e) An element in period that does not form an oxide - Argon
(f)  Lower nuclear charge - Magnesium
(g) Higher electron affinity - Neon
(h) Maximum metallic character - Potassium
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(a) Sodium, Fluorine
(b) Argon
(d) Silicon
(e) Argon
(g) Fluorine
(h) K
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