What is the electric charge of a hydrogen atom?
A) 0 C
B) −2 pC
C) +1 nC
D) +1 mC
E) +2 nC
IMAT 2026 · Question 53
Q53 - Electrostatics
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The correct answer is A) 0 C.
A hydrogen atom has one proton (+1.6 × 10⁻¹⁹ C) and one electron (−1.6 × 10⁻¹⁹ C). The charges are equal and opposite, so the atom is neutral.
The other options are also absurd in size: 1 nC = 10⁻⁹ C would be about 6 billion elementary charges, impossible for a single atom.
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