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The positions of three elements A, B and C in the periodic table are shown below:
Group 16 | Group 17 |
- | - |
- | A |
- | - |
B | C |
(a) State whether A is a metal or non-metal.
(b) State whether C is more reactive or less reactive than A.
(c) Will C be larger or smaller in size than B?
(d) Which type of ion, cation or anion, will be formed by element A?
(b) State whether C is more reactive or less reactive than A.
(c) Will C be larger or smaller in size than B?
(d) Which type of ion, cation or anion, will be formed by element A?
(a). Since the valency of group elements is \(1\) and all these elements accept electrons; thus, \(A\) is a .
(b). \(C\) is less reactive than \(A\) because as we move down in a , the reactivity of non-metals increases.
(c). \(C\) is smaller in size than \(B\) because \(B\) and \(C\) are related to the same , and the size decreases as one moves from left to right in a period.
(d). \(A\) will form an anion because it is a .
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