Multiple Choice
After two nitrogen atoms share their electrons to form a nitrogen molecule (N_2), how many valence electrons does each nitrogen atom have?
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10. Periodic Properties of the Elements
Valence Electrons of Elements
Multiple Choice
Which of the following elements has two electrons in its outer p orbitals?
A
Carbon (C)
B
Oxygen (O)
C
Nitrogen (N)
D
Fluorine (F)
Verified step by step guidance1
Recall the electron configuration of elements and how electrons fill atomic orbitals according to the Aufbau principle, Hund's rule, and Pauli exclusion principle.
Identify the position of each element in the periodic table to determine their valence electron configuration, focusing on the outer p orbitals.
Write the electron configuration for Nitrogen (N), which has an atomic number of 7. Its valence shell is the second shell, with the configuration ending in 2p orbitals.
Count the number of electrons in the outer p orbitals for Nitrogen. Since the 2p subshell can hold up to 6 electrons, determine how many are present for Nitrogen.
Compare this with the other elements listed (Carbon, Oxygen, Fluorine) to confirm that Nitrogen uniquely has exactly two electrons in its outer p orbitals.
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