SSC
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Rows ⋘ ____ ⋙ on the periodic table indicate the number of ____
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groups
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energy levels
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valence electrons
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total electrons
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Explanation:
Detailed explanation-1: -What do the rows represent? The rows in the periodic table correspond to the number of energy levels of the atoms in that row. If you look at the chart, you can see that the atoms in the first row have one energy level. The atoms in the second row have two energy levels and so on.
Detailed explanation-2: -Periods: The horizontal rows in the periodic table that signify the number of electron shells in an element. Families: Elements that have the same number of valence electrons and therefore similar properties.
Detailed explanation-3: -The atoms in the third period have electrons in 3 energy levels.
There is 1 question to complete.