The elements in one row of the periodic table have a common valence shell.
- In a periodic table, there are 7 periods and 18 groups.
- The vertical columns are known as groups.
- The horizontal rows are known as periods. The period number tells us about the number of electron shells.
- Elements in the same period have the same principal quantum number.
- Also, they have the common valence shell.
- Elements in the same group have the same number of valence electrons in their valence shell.
So, from this, we can conclude that the elements in one row of the periodic table have a common valence shell.
Learn more about groups and period here:
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