Question

in modern periodic table across the second period atomic number increases atomic size
a) increases b) remains same c) increases then decreases d) decreases​

Answer 1

Answer:

d) decreases.

Explanation:

Across a period, effective nuclear charge increases as electron shielding remains constant. A higher effective nuclear charge causes greater attractions to the electrons, pulling the electron cloud closer to the nucleus which results in a smaller atomic radius. That means Atomic size decreases with increase of Atomic number across period.

Answer 2

Answer:

c) increases then decreases

Explanation:

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