GK
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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2
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4
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6
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8
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Detailed explanation-1: -Carbon has 6 electrons—2 in the first shell, and 4 in the second shell (so four valence electrons). Nitrogen has 7 electrons—2 in the first shell, and 5 in the second shell (so five valence electrons). Oxygen has 8 electrons—2 in the first shell, and 6 in the second shell (so six valence electrons).
Detailed explanation-2: -Carbon has an atomic number of six (meaning six protons, and six electrons as well in a neutral atom), so the first two electrons fill the inner shell and the remaining four are left in the second shell, which is the valence (outermost) shell.
Detailed explanation-3: -It has an atomic number of 6. That means a carbon atom has 6 protons, 6 neutrons, and 6 electrons.
Detailed explanation-4: -The second shell can hold 8 electrons. The third shell can hold 32 electrons. Within the shells, electrons are further grouped into subshells of four different types, identified as s, p, d, and f in order of increasing energy.