Question
Which Statement about magnesium [Mg] and calcium [Ca] is correct?
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1 point
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They are both classified as noble gases.
They both have the same number of valence electrons.
They both have the same number of electron shells.
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1 point
Captionless Image
They are both classified as noble gases.
They both have the same number of valence electrons.
They both have the same number of electron shells.
Answers
GPT-4o mini
The correct statement among the options provided is:
**They both have the same number of valence electrons.**
Both magnesium (Mg) and calcium (Ca) are in group 2 of the periodic table, which means they each have 2 valence electrons.
The other statements are incorrect:
- They are not classified as noble gases; noble gases are found in group 18.
- Magnesium has 3 electron shells (1s² 2s² 2p⁶ 3s²), while calcium has 4 electron shells (1s² 2s² 2p⁶ 3s² 3p⁶ 4s²).
**They both have the same number of valence electrons.**
Both magnesium (Mg) and calcium (Ca) are in group 2 of the periodic table, which means they each have 2 valence electrons.
The other statements are incorrect:
- They are not classified as noble gases; noble gases are found in group 18.
- Magnesium has 3 electron shells (1s² 2s² 2p⁶ 3s²), while calcium has 4 electron shells (1s² 2s² 2p⁶ 3s² 3p⁶ 4s²).