Question

Assertion: Atomic size of potassium is greater than that of sodium.Reason: As we go down the group, atomic radius increases.​

Answer 1

Answer:

because potassium has a 4 shells but sodium has only 3 shell in its atom

so due to increase in the number of shell atomic radius also increased

assertion and reason both are correct and reason is the correct explanation

Answer 2

Both Assertion and Reason are correct.

Explanation:

• Assertion: Atomic size of potassium is greater than that of sodium.

The potassium has larger radius than sodium so potassium atomic size is larger than sodium.

• Reason:As we go down the group, atomic radius increases.

Down the group the quantity of energy levels (n) of atoms increases, so there is a greater distance between the nucleus and so the outermost orbital.

This means larger atomic radius.

Project code #SPJ3

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