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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

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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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