size of an atom decreases across the period explain why
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size of an atom decreases across the period explain why
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Answer:
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.
Answer:
across the period as we move from left to right nuclear force increases. The attraction of nucleus on valence electrons increase and hold it tightly si its size decrease