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The following table shows the position o...

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

Using the above table answer the following questions :
(a) Which element will form only covalent compounds ?
(b) Which element is a metal with valency 2 ?
(c) Which element is a non-metal with valency of 3 ?
(d) Out of D and E, which one has more atomic radius and why?
(e) Write a common name for the family of elements C and F.

Text Solution

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(a) The element 'E' present in group 14 is a non-metal. Its name is silicon (Si) and the compounds of the element are only covalent.
(b) The element 'D' present in group 2 is a metal known as magnesium (Mg). It exhibits valency 2 in its compounds.
(c) The elements 'B' present in group 15 is a non-metal. It is nitrogen (N) and exhibits valency 3 in its compounds.
(d) The element 'D' has more atomic radius than the element 'E' as the atomic size decreases along a period.
(e) The elements 'C' and 'F' present in group 18 belong to a family known as noble gases.
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