How many electrons are there in the 2^nd principal energy level (n = 2) of a phosphorus atom? A) 3 B) 5 C) 6 D) 8 E) 10

Name: How many electrons are there in the 2 nd principal energy level (n = 2) of a phosphorus atom? A) 3 B) 5 C) 6 D) 8 E) 10
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The 2nd principal energy level can hold a maximum of 8 electrons. In a phosphorus atom, which has an atomic number of 15, the electron configuration is 1s² 2s² 2p⁶ 3s² 3p³. The 2nd energy level (2s² 2p⁶) contains 8 electrons.

How Many Electrons Are There in the 2nd Principal Energy

How Many Electrons Are There in the 2^nd Principal Energy