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5. An element has an atomic number Of 84 and a mass number of 210. To describe the element correctly,
which number of particles will it have?
a. 84 protons and 210 neutrons
b. 84 protons and 84 neutrons
c. 84 protons and 126 neutrons
d. 84 protons and 126 electrons​


Sagot :

5. An element has an atomic number Of 84 and a mass number of 210. To describe the element correctly,

which number of particles will it have?

a. 84 protons and 210 neutrons

b. 84 protons and 84 neutrons

c. 84 protons and 126 neutrons

d. 84 protons and 126 electrons

The answer is letter A. 84 protons and 210 neutrons

Answered By: HuYiTian94