An neutral atom has 40 protons and 10 neutrons what is the mass number

asked Feb 25, 2021 134k views

2 votes

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4 votes

Answer:

Step-by-step explanation:

mass number=proton+neutron

=40+10

mass number=50

Bob Moore answered Feb 26, 2021

5.2k points

6 votes

Answer:

Step-by-step explanation:

40-10 = 30…...…............

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