Question
Chemistry Question on Alkenes
Which element has three shells which are completely filled with electrons?
A
(A) Argon
B
(B) Neon
C
(C) Krypton
D
(D) Aluminum
Answer
(A) Argon
Explanation
Solution
Explanation:
Argon element has three shells that are completely filled with electrons.Third-most abundant gas in the Earth's atmosphere. It is produced industrially by the fractional distillation of liquid air. It is commonly used to fill incandescent light bulbs. It is used in tungsten filament. All Helium, Neon, and Argon have completely filled outermost shells. But it is asked which element have all three shells filled. So, Argon-Ar (2,8,8) has all three shells filled completely filled with electrons.Hence, the correct option is (A).