What is the mass defect of lithium? assume the following: atomic number of lithuim= 3 atomic mass of lithuim= 7.0144 atomic mass units. mass of 1 proton = 1.0073 atomic mas units. mass of 1 neutron = 1.0087 atomic mass units.

0.0423 amu.

Explanation:

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explanation:

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you need to take a look at the periodic system in order to sort these elements into pairs that would most likely exhibit similar chemical properties. first, you need to find elements that are found in the same group (groups are vertical in the periodic system), and then to see whether they have the same valence number. if they meet these criteria, they will have similar properties.

the first pair: ne (neon) and kr (krypton), are noble gases found in group 8

the second pair: li (lithium) and k (potassium), found in group 1

the third pair: s (sulfur) and te (tellurium), found in group 6