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  1. 1. Who proposed modern periodic table ?
  2. 2. How many groups are there in modern periodic table ?
  3. 3. How many periods are there in modern periodic table ?
  4. 4. Name any 5 metals of s block elements.
  5. 5. Name any 5 metals of d block elements.

QUESTIONS ?

ANSWERS

  1. 1. Henry Moseley
  2. 2. 18
  3. 3. 7
  4. 4. Li, Na, K, Mg, Ca
  5. 5. Cu, Fe, Zn, Ni, Co
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