GK
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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10
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11
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12
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22
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Detailed explanation-1: -As Sodium loses its electron it forms a Sodium ion ( Na + ) and the total number of electrons are 10.
Detailed explanation-2: -Neutral sodium atom on left has 11 protons and 11 electrons. Sodium ion on right has 11 protons and 10 electrons, with a +1 overall charge.
Detailed explanation-3: -The “+1” tells us that it is missing one electron. The positive charge results from there being more protons than electrons. Since each electron has a “-1” charge, one electron has left the sodium atom. So it now has 10 electrons.
Detailed explanation-4: -Since the atomic number of sodium atom is 11, it has 11 protons. Since the atom as a whole is electrically neutral, the number of electrons = number of protons = 11. A positively charged sodium ion (Na+) is formed by the removal of one electron from a sodium atom. So, a sodium ion has 11 – 1 = 10 electrons.
Detailed explanation-5: -The atomic number of sodium (Na) is 11. Hence, it has 11 electrons and protons in its atom.