Question

The table below gives the numbers of protons, electrons, and neutrons in four atoms.

Atom Number of protons Number of neutrons Number of electrons
1 9 8 9
2 9 9 8
3 9 9 10
4 9 10 9

Based on the table, which atom has a charge of –1?
1
2
3
4

Answer 1

Atom 3

Step-by-step explanation:

The given data is as follows:

Atom number Protons Neutrons Electrons

1 9 8 9

2 9 9 8

3 9 9 10

4 9 10 9

The charge on an atom is given by the relation:

Charge = number of protons - number of electrons

For atom 1: charge = 9 - 9 = 0

Atom 2 : charge = 9-8 = 1

Atom 3: charge = 9 -10 = -1

Atom 4 : charge = 9-9 = 0

Answer 2

3

Step-by-step explanation:

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