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ki77a [65]
3 years ago
10

Which statement best explains why calcium has a larger atomic radius than magnesium?

Chemistry
1 answer:
Anton [14]3 years ago
6 0

Calcium has electrons in more energy levels than magnesium. The number of electron in calcium atom is 20 which means 4 energy levels. (2 electron in first shell+ 8 electron in second shell+8 electron in third shell+ 2 electron in fourth shell). While number of electron in magnesium atom is 12 which means 3 energy levels. (2 electron in first shell+ 8 electron in second shell+ 2 electron in third shell). Also the Calcium third energy level contains more electron than magnesium.

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