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Calculate the approximate charge in coulombs and approximate mass in kilograms of the nucleus of lithium-7 isotope |
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Answer» Solution :Nucleus of Li atom has 3 protons and 4 neutrons. CHARGE on one proton `= 1.60 XX 10^(-19)` coulombs `:.` Charge on 3 protons (i.e., charge on nucleus) `= 3 xx 1.60 xx 10^(-19) C = 4.80 xx 10^(-19) C` Mass of proton `~~` mass of NEUTRON `~~ 1.67 xx 10^(-27) kg` `:.` Mass of nucleus `= 7 xx 1.67 xx 10^(-27) kg = 11.69 xx 10^(-27) kg` |
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