PLEASE HELP!!! What is the mass of one lead atom in amu?

Chemistry

2 answers:

alexandr402 [8]2 years ago

7 0

Answer: 207.2

Explanation:

In imprecise terms, one AMU is the average of the proton rest mass and the neutron rest mass. This is approximately 1.67377 x 10 -27 kilogram (kg), or 1.67377 x 10 -24 gram (g). The mass of an atom in AMU is roughly equal to the sum of the number of protons and neutrons in the nucleus.

scoundrel [369]2 years ago

3 0

Answer:207.2

Percent composition by element

Element Symbol Atomic Mass

Lead Pb 207.2

Explanation: googled it

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