Question

Assertion: across a period atomic radius decreases. Reason: it is because it is oval in shape

Answer 1

Correct answer is- assertion and reason both are correct But reason is not the correct explanation of the assetion. Explanation:-) atomic radius across the period decreases because The effective nuclear charge increases and the force between the electron and neutron become more strong which attract the Electron to words the neutron making the size of the atom small