Question

The atomic number of lithium is 3. How many neutrons does an atom of lithium have if it is represented by the symbol shown below?

7Li

Answer 1

Answer:    D. atomic number = 56, atomic mass = 26, net charge = 3- A lithium atom contains 3 protons, 4 neutrons and 3 electrons.

Step-by-step explanation:

Answer 2

Answer:

D. atomic number = 56, atomic mass = 26, net charge = 3- A lithium atom contains 3 protons, 4 neutrons and 3 electrons.

Step-by-step explanation: