The number of neutrons in an atom can be found by subtracting the atomic number from the mass number.

Step 1: Identify the mass number. In this case, the mass number of the lithium atom is 7.

Step 2: Identify the atomic number. In this case, the atomic number of the lithium atom is 3.

Step 3: Subtract the atomic number from the mass number to find the number of neutrons.

So, 7 (mass number) - 3 (atomic number) = 4.

Therefore, a lithium atom with a mass number of 7 and an atomic number of 3 has 4 neutrons.

Question

The number of neutrons in an atom can be found by subtracting the atomic number from the mass number.

Step 1: Identify the mass number. In this case, the mass number of the lithium atom is 7.

Step 2: Identify the atomic number. In this case, the atomic number of the lithium atom is 3.

Step 3: Subtract the atomic number from the mass number to find the number of neutrons.

So, 7 (mass number) - 3 (atomic number) = 4.

Therefore, a lithium atom with a mass number of 7 and an atomic number of 3 has 4 neutrons.

Knowee AI · Accepted Answer

The number of neutrons in an atom can be found by subtracting the atomic number from the mass number.

Step 1: Identify the mass number. In this case, the mass number of the lithium atom is 7.

Step 2: Identify the atomic number. In this case, the atomic number of the lithium atom is 3.

Step 3: Subtract the atomic number from the mass number to find the number of neutrons.

So, 7 (mass number) - 3 (atomic number) = 4.

Therefore, a lithium atom with a mass number of 7 and an atomic number of 3 has 4 neutrons.

A lithium atom has a mass number of 7 and an atomic number of 3. The number of neutrons in this atom is: