How many electrons, protons, neutrons are contained in each atom?
a) gallium-69
b) fluorine-23
c) titanium-48
d) tantalum-181

The atomic number of a neutral atom is equal to the number of protons and the number of electrons of the atom. The atomic weight meanwhile is equal to the sum of the number of protons and number of neutrons. Hence

A. P-31, E- 31, N - 38

B. P = E = 9, N = 14

C. P = E = 22, N = 26

D. P = E = 73 , N = 108 

under a microscope, cancer cells may look very different from normal cells. they often have different sizes and some may be larger than normal while others are smaller. cancer cells are often abnormally shaped and the control centre of the cell (the nucleus) may have an abnormal appearance.

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