Worksheet: Electron Shells

In this worksheet, we will practice using electron shell diagrams to identify elements and describing how electrons are arranged in atoms and ions.

Q1:

How many electrons are in the outermost electron shell of fluorine?

Q2:

Which electronic configuration describes how electrons are arranged in the shells of a chlorine ion?

  • A2, 8, 6
  • B2, 8, 8
  • C2, 8, 7
  • D2, 7
  • E2, 8

Q3:

Which electronic configuration describes how electrons are arranged in the shells of a potassium atom?

  • A2, 8, 8, 1
  • B8, 8, 3
  • C2, 8, 8, 8, 1
  • D2, 8, 9
  • E2, 8, 7, 2

Q4:

How many electrons are in the outermost electron shell of boron?

Q5:

Which electronic configuration describes how electrons are arranged in the shells of a sodium ion?

  • A2, 8, 8, 5
  • B2, 8, 1
  • C2, 8
  • D2, 1
  • E2, 8, 2

Q6:

How many electrons do atoms of elements in group II of the periodic table have in their outer shell?

Q7:

How many electrons are in the outermost electron shell of neon?

Q8:

If an atom of an element had 16 electrons, which group of the periodic table would it be in?

Q9:

Which electronic configuration describes how the electrons are arranged in the shells of an aluminum atom?

  • A2,5,6
  • B2,11
  • C2,3,8
  • D2,8,3
  • E8,5

Q10:

Which electronic configuration describes how the electrons are arranged in the shells of a carbon atom?

  • A2,6
  • B2,4
  • C2,8
  • D6
  • E3,3

Q11:

How many electrons do most atoms of elements in group 18 of the periodic table have in their outer shell?

Q12:

Which picture shows the arrangement of electrons in an atom of oxygen?

  • A
  • B
  • C
  • D
  • E

Q13:

In which group of the periodic table will an atom with 16 electrons be found?

  • AGroup 1
  • BGroup 16
  • CGroup 5
  • DGroup 14
  • EGroup 7

Q14:

How many electrons are found in each energy level in an atom of carbon?

  • A2, 3, 1
  • B2, 6
  • C2, 8
  • D2, 4
  • E2, 2, 2

Q15:

How many valence electrons are there in a neon atom?

  • A10
  • B2
  • C16
  • D8
  • E20

Q16:

Which of the following has the electron configuration of 2, 8, 8?

  • AIodide ion
  • BChloride ion
  • CBromide ion
  • DArgon
  • EFluoride ion

Q17:

What is the maximum number of electrons in the 1st electron shell?

  • A50
  • B32
  • C8
  • D2
  • E18

Nagwa uses cookies to ensure you get the best experience on our website. Learn more about our Privacy Policy.