What is the mass defect of lithium? Assume the following: Atomic number of lithium = 3 Atomic mass of lithium = 7.0144 atomic mass units. Mass of 1 proton = 1.0073 atomic mass units. Mass of 1 neutron = 1.0087 atomic mass units.

(A) 0.0043 atomic mass units

(B) 0.0423 atomic mass units

(C) 3.0219 atomic mass units

(D) 4.0348 atomic mass units

(E) 7.0567 atomic mass units

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24 November, 18:17

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Chiquita · Answer 1

3 protons x 1.0073amu = 3.022

4 neutrons x 1.0087amu = 4.035

mass = 7.0567amu

mass defect = 7.0567 - 7.0144 = 0.0423amu ... B with your mass of Li