Question

The glow of a neon light is caused by electrons emitting energy as they _____.

a. move from lower to higher energy levels

b. collide with the nucleus

c. move from higher to lower energy levels

d. collide with other electrons

Answer 1

c. move from higher to lower energy levels

Answer 2

the answer is c

because the atoms of inert gases such as helium, neon or argon never form stable molecules by chemically bonding with other atoms. One need apply only a modest electric voltage to electrodes at the ends of a glass tube containing the inert gas and the light begins to glow.