The following table shows the position of six elements A, B, C, D, E and F in the Periodic Table

CBSE Class 10 CBSE Class 10 Science
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The following table shows the position of six elements A, B, C, D, E and F in the Periodic Table.

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Using the above table answer the following questions:

  1. Which element will form only covalent compounds?
  2. Which element is a metal with valency 2?
  3. Which element is a non-metal with valency 3?
  4. Write a common name for the family of elements C and F.
  5. Out of D and E, which one has a bigger atomic radius and why?

Answer:

  1. E
  2. D
  3. B
  4. The noble gases.
  5. D has bigger atomic radius. The atomic radius decreases in moving from left to right along a period. This is due to an increase in nuclear charge which tends to pull the electrons closer to the nucleus and reduces the size of the atom.