Identify the number of protons, neutrons, and electrons for the atom pictured above. Also, identify the atom's atomic number and mass number.

Question

Picture: Atom P: 21, and N: 24.

1. Number of electrons:

2. Number of neutrons:

3. Number of protons:

4. Atomic number:

5. Mass number:

Choices: 21,24,and 45

choose the correct answers

Answer 1

To analyze the atom based on the provided information:

1. Number of electrons: In a neutral atom, the number of electrons equals the number of protons. Therefore, since you have 21 protons (from the given information), the number of electrons is 21.

2. Number of neutrons: The number of neutrons can be found by subtracting the number of protons from the mass number. Given that the mass number is the sum of protons and neutrons, you provided that there are 24 neutrons. Therefore, the number of neutrons is 24.

3. Number of protons: According to the information provided, the number of protons is 21.

4. Atomic number: The atomic number is defined as the number of protons in an atom. Therefore, the atomic number is 21.

5. Mass number: The mass number is the total number of protons and neutrons. If you add 21 (protons) + 24 (neutrons), the mass number is 45.

To summarize:

• Number of electrons: 21
• Number of neutrons: 24
• Number of protons: 21
• Atomic number: 21
• Mass number: 45