unpaired electrons?

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An atom of an element has two electrons in the first energy level and five electrons in the second energy level. How many unpaired electrons does an atom of this element have?

2007-10-16 08:32:37 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry

2 answers

Three, the 2px, 2py and 2pz sub-orbitals each have one unpaired electron. The atom, BTW, is nitrogen, which forms a dimer; a hybrid triple bond is formed to share unpaired electrons with each other.

2007-10-16 08:41:16 · answer #1 · answered by cattbarf 7 · 0⤊ 0⤋

1s2, 2s2, 2p3.

There are 3 unpaired electrons.

2007-10-16 08:39:00 · answer #2 · answered by papastolte 6 · 0⤊ 0⤋