An element has atomic number 19. where would you expect this element in the periodic table and why?2m for 10 class​

2 thoughts on “An element has atomic number 19. where would you expect this element in the periodic table and why?2m for 10 class​”

1. First group, Fourth period

   Explanation:

   Since the element has atomic number of 19, its Electronic Configuration can be written as:

   2, 8, 8, 1

   This means that there are

   • 2 electrons in K shell
   • 8 electrons in L shell
   • 8 electrons in M shell
   • 1 electron in N shell

   As we can see, the electrons have occupied 4 shells.

   So, the element belongs to Fourth period.

   In the outermost shell which is the N shell, only 1 electron is present.

   So, the element belongs to First group.

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2. Answer:

   in group 1( 19 atomic number is for potassium )

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