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Anon25 [30]
3 years ago
10

Why does the size of the atom of elements increases down a group and decreases when you move across?

Chemistry
1 answer:
ivann1987 [24]3 years ago
4 0
This is<span> caused by the </span>increase<span> in the number of protons and electrons </span>across<span> a period. One proton </span>has<span> a greater effect than one electron; thus, electrons </span>are<span> pulled towards the nucleus, resulting in a smaller radius.</span>Atomic<span> radius </span>increases<span> from top to bottom within a </span>group<span>. </span>
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