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What is the number of electrons in an atom that has 3 protons and 4 neutrons? (1) 1 (3) 3 (2) 7 (4) 4
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20 votes
What is the number of electrons in an atom that

has 3 protons and 4 neutrons?
(1) 1
(3) 3
(2) 7
(4) 4

User Lukasz Matysiak
by
5.0k points

2 Answers

8 votes

Answer:

7 is answer.

Step-by-step explanation:

therefore, the mass number of an atom with 3 protons,4 neutrons,and 3 electrons is 7.

I hope it's helpful!

User Moonshine
by
5.5k points
5 votes

Answer:

(2)

Step-by-step explanation:

User Gnud
by
5.3k points
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