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?

Explanation:

Step1: Recall charge - calculation formula

Charge = Number of protons - Number of electrons

Step2: Calculate charge of Atom 1

Charge of Atom 1 = 9 - 9 = 0

Step3: Calculate charge of Atom 2

Charge of Atom 2 = 9 - 9 = 0

Step4: Calculate charge of Atom 3

Charge of Atom 3 = 9 - 8 = + 1

Step5: Calculate charge of Atom 4

Charge of Atom 4 = 9 - 10=-1

Answer:

D. Atom 4