Question

name two elements that have 8 electrons in their outermost shells​

Answer 1

Answer:It's neon(2,8) and argon(2,8,8). Just memorize the elements till 20 and you'll master it☺

Explanation:

Answer 2

Neon and argon have 8 electrons in their outermost shells.

• The elements which have 8 electrons in the outermost shell or in the valence shell,are known as the noble gases.

• All these noble gases are situated in the 18th group of the modern periodic table. (Helium is excluded here)

• These gases belong to an extremely stable situation due to the fully filled valence shell and that's why these elements are less reactive.