Elements X, Y and Z belongs to IA group of the periodic table their atomic radii are as follows:
X⇢1.33 A, Y⇢0.95 A, Z⇢0.60 A
Arrange the elements in the increasing order of atomic numbers by giving reasons.

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Solution

The greater the ionic radii greater will be the atomic number
As ionic radii increase the number of electrons increases. Thus atomic number increases.
As the atomic number increases the valence electron becomes farther removed from, and less strongly attracted to the nuclear core, as a result the reactivity of the metal increases.
When we move from top to bottom in a group the atomic size increases and the atomic number also increases.
Therefore the increasing order of atomic numbers will be
Z < Y < X. i.e
Z⇢0.60 A < Y⇢0.95 A < X⇢1.33 A

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Elements X, Y and Z belongs to IA group of the periodic table their atomic radii are as follows:X⇢1.33 A, Y⇢0.95 A, Z⇢0.60 AArrange the elements in the increasing order of atomic numbers by giving reasons.

Elements X, Y and Z belongs to IA group of the periodic table their atomic radii are as follows:
X⇢1.33 A, Y⇢0.95 A, Z⇢0.60 A
Arrange the elements in the increasing order of atomic numbers by giving reasons.