If lithium loses an electron to become li+ what is the average atomic mass of the lithium ion? explain how you arrived at your answer

The average atomic mass of the lithium ion remains the same as lithium atom which is 6.94 amu

Explanation:

Mass number is defined as the sum of number of protons and number of neutrons present in an atom. It is represented as A.

A = Mass number = Number of neutrons + Number of protons.

An ion is formed when a neutral atom looses or gains electrons.

So, the loss or gain of electrons does not effect the mass number of an atom. Thus, when lithium atom looses an electron to form lithium ion , the average atomic mass of the ion remains the same as the neutral atom.

Average atomic mass of lithium atom = 6.94 amu

Hence, the average atomic mass of lithium ion is 6.94 amu.

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