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15-09-2020
Chemistry

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Question 2 (1 point)
At atom has 18 protons, 17 neutrons, and 18 electrons. What is the mass of the atom?

A.36 atomic mass units (amu)
B.36 milligrams
C.35 atomic mass units (amu)
D.35 milligrams

Respuesta :

JAKE1NTHEB0X JAKE1NTHEB0X

15-09-2020

Answer:

35 amu

Explanation:

In an atom, only masses of protons and neutrons are relevant. electrons are so small in size that their masses are negligible.

The mass of 1 proton/neutron is 1amu.

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