The position of three elements X, Y and Z in the periodic table are shown below :
The position of three elements X, Y and Z in the periodic table are shown below :
(i) Which type of ion, cation or anion, will be formed by element X ?
(ii) Which element, Y or Z, has the atom of comparatively larger size ?
Give reason in each case.
| Group 1 | Group 2 |
| - | - |
| X | - |
| - | - |
| Y | Z |
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(i) The valency of X is one, It has a tendency to lose one electron., Therefore, X will form a cation.
(ii) Y; because atomic radius decreases across a period due to increase in the electrostatic force between electrons and nucleus.
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