SCIENCE
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What atom matches this electron configuration?1s22s22p63s2
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Neon
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Magnesium
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Aluminum
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Potassium
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Explanation:
Detailed explanation-1: -The magnesium matches this electron configuration 1s22s22p63s2.
Detailed explanation-2: -So, the element with the atomic number of 14 is Silicon!
Detailed explanation-3: -In order to become an ion with a minus three charge, it must acquire three electrons-in this case another three 3p. Thus, the electron configuration for a P3– ion is 1s22s22p63s23p6.
Detailed explanation-4: -Magnesium has atomic number 12. Its electronic configuration is 2, 8, 2. Thus, it has 2 valence electrons.
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