How much heavier is a typical hydrogen atom than a proton?
A) twice as heavy
B) 1 part in 2000
C) 2000 times heavier
D) A hydrogen atom is lighter than a proton.

Question

Quizplus · Accepted Answer

A typical hydrogen atom consists of one proton and one electron. The mass of an electron is about 1/1836 the mass of a proton, making the hydrogen atom only slightly heavier than a proton, approximately 1 part in 2000.

How Much Heavier Is a Typical Hydrogen Atom Than a Proton