GK
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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If an atom is located in the 1st column of the periodic table, then a neutral atom has
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1 energy level
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1 valence electrons
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A difference between protons and neutrons of 1
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To gain one electron
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Explanation:
Detailed explanation-1: -The columns indicate, for the neutral form of the element, how many valance electrons are in the valance shell: the first column (Group IA) contains 1 valence electron, the second column (Group IIA) contains 2 valence electrons, etc., and the last column (Group VIIIA) contains 8 valence electrons.
Detailed explanation-2: -Group 1 has 1 valence electron.
Detailed explanation-3: -A: Any element in group 1 has just one valence electron. Examples include hydrogen (H), lithium (Li), and sodium (Na).
Detailed explanation-4: -The alkali metals have only one valence electron in their highest-energy orbitals (ns1).
There is 1 question to complete.