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

Question

Gustavo Jarvis

4 March, 12:39

+1

Answers (1)

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Finn Herring · 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