Question

this is the bohr model of an atom or ion. using the periodic table, complete the sentences. this bohr model represents an atom of the element li. it has a mass number of and a charge of 0.

Explanation:

Step1: Identify element Li

Lithium (Li) has an atomic number of 3.

Step2: Determine sub - atomic particles

In a neutral atom, the number of protons = atomic number. So, Li has 3 protons. Since the atom is neutral, the number of electrons = number of protons, so 3 electrons. The mass number is the sum of protons and neutrons. From the Bohr model shown, there are 4 neutrons. Mass number = 3 (protons)+ 4 (neutrons)=7.

Answer:

This Bohr model represents an atom of the element Li. It has a mass number of 7, 3 protons, 3 electrons and 4 neutrons and a charge of 0.