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Why atomic size of aluminium and gallium is almost same?

Why atomic size of aluminium and gallium is almost same?

Grade:11

1 Answers

Isabel Lisa Jose
12 Points
6 years ago
Gallium has a smaller atomic radius than alluminium. This is because gallium has empty d orbitals and d orbitals contribute to less sheilding of electrons and therefore alluminium atom is larger than gallium atom.

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