Question

which numbers/symbols correctly complete the table above?
○ li, 3, 3
○ li, 6, 3
○ li, 6, 2
○ li, 3, 2

Explanation:

Step1: Determine the atomic number

The atomic number of an element is equal to the number of protons. Given that the number of protons is 3, the atomic number is also 3.

Step2: Calculate the mass number

The mass number is the sum of protons and neutrons. Protons = 3, neutrons = 3. So, mass number = 3 + 3 = 6.

Step3: Determine the number of electrons

For a charged ion \(Li^{+1}\), the number of electrons = number of protons - charge. Protons = 3, charge = +1. So, electrons = 3 - 1 = 2.

Step4: Determine the oxidation state

The oxidation state of \(Li^{+1}\) is +1.

Answer:

Li, 6, 3, 3, 2, +1