Question

Arrange the following elements in order of increasing atomic radii. Rb, Indium (In), Ge, O, P Group of answer choices O < P < Ge < In < Rb Rb < In < Ge < P < O P < O < Ge < In < Rb O < P < Rb < In < Ge O < P < In < Ge < Rb In < Ge < Rb < P < O P < O < In < Ge < Rb Ge < In < P < O < Rb

Answer 1

Answer:

O<P<Ge<In<Rb

Explanation:

In the periodic table atomic radii decreases across a period when we move from left to right and decreases down the group.

Given:

Rb,In- both are of same period (So the atomic radii decreases when we move from left to right)

In, Ge- Ge belongs to copper family

     In- In belongs to boron family

for In, Ge, O, P in each one extra shell gets added.

So the order of increasing radii will be

O<P<Ge<In<Rb

Answer 2

The correct order of increasing atomic radii is; O < P < Ge < In < Rb

The atomic radii is a periodic property that decreases across the period. As the size of the nuclear charge increases across the period without addition of more shells, the electrostatic attraction between the nucleus and electrons increases hence the atom becomes smaller.

Down the group, the atomic radii of elements increases as more shells are added and screening effect becomes more significant leading to increased inter-electron repulsion. and larger atomic radius.

The order of increasing atomic radii of the elements is; O < P < Ge < In < Rb

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