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Sagot :
Answer:
-3
Explanation:
What is the overall charge of anion that has 15 protons, 18 electrons and 17 neutrons?
ONLY CHARGED PARTICLES CONTRIBUTE TO THE OVERALL CHARGE, SO
+15 -18 = -3 OVERALL CHARGE
Remember
- Proton=+ve
- Electron=-ve
- Neutron=0(neutral)
Total charge
- No of protons+No of electrons
- 15-18
- -3
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