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larisa86 [58]
2 years ago
5

What is the charge of an atom with 20 protons and 18 electrons?

Physics
2 answers:
aev [14]2 years ago
8 0
The answer is 2+ because I just know it’s easy
aleksandr82 [10.1K]2 years ago
3 0
The charge is +2

20-18=2
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Use the mass spectrum of europium to determine the atomic mass of europium. where the peak representing eu-151 has an exact mass
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Answer: The atomic mass of a Europium atom is 151.96445 amu.

From the given information:

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Abundance of Eu-153 atom:

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Atomic mass of Europium atom:

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Therefore, the atomic mass of a Europium atom is 151.96445 amu.

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3 years ago
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