How Many Electrons Are In The First Shell Of An Atom?

6 Answers

shreya agrawal Profile
shreya agrawal answered
There can be only 2electrons utmost in this shell
hydrogen have one electron in this shell
helium have 2electrons in this shell
let the no. Of shells be n
No. Of electrons = 2n2
here take example of shell no. 3
no. Of electrons in this shell = 2 (3)2
= 2 * 9
= 18
Anonymous Profile
Anonymous answered
43
SHARTHAK MISHRA Profile
SHARTHAK MISHRA answered
There can be only 2electrons utmost in this shell

No. Of electrons = 2n2
here take example of shell no. 3
no. Of electrons in this shell = 2 (3)2 = 2 * 9

= 18

but as hydrogen has only 1 electron it has 1 electron in its outermost cell
Aisha Profile
Aisha answered
Two of the electrons are in the first energy level or the shell while the other five are in the second energy level. See the link below for more details:
education.jlab.org
thanked the writer.
Susan Rothman
Susan Rothman commented
From the link provided, I quote: "Before you can build your model, you will need to know how many protons, neutrons and electrons your atom has. If you do not already know how to use the Periodic Table of Elements to find this information, read the 'How many protons, electrons and neutrons are in an atom of...?' page to learn how."

You could not design an atom without knowing the Element.

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