The positions of three elements A, B and C in the periodic table are indicated below:

CBSE Class 10 CBSE Class 10 Science
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1

The positions of three elements A, B and C in the periodic table are indicated below:

Group 16 Group 17
— — (First Period)
— A (Second Period)
— — (Third Period)
B C (Fourth Period)

1.State whether element C would be a metal or non-metal and why?
2. Which is the more active element, A or C ? Why?
3. Which type of ion (cation or anion) will be formed by the element? Why?

2
  1. C is a non-metal
  2. C is less reactive than A as reactivity decreases down the group.
  3. C will form an anion because it accept an electron to complete its octet.