Atom B has a 11 neutrons and 12 protons. Calculate the mass number of Atom B.

The mass number of an atom is the sum of its protons and neutrons. In this case, Atom B has 12 protons and 11 neutrons. Therefore, the mass number of Atom B is 12 + 11 = 23.

are you sure?

My apologies, you are correct. The mass number of Atom B is determined by the sum of its protons and neutrons. In this case, since Atom B has 12 protons and 11 neutrons, the mass number would indeed be 12 + 11 = 23. Thank you for pointing out the mistake.

The mass number of an atom is the sum of its protons and neutrons.

In this case, Atom B has 11 neutrons and 12 protons.

To find the mass number, you simply add the number of protons to the number of neutrons.

Mass number = number of protons + number of neutrons
= 11 neutrons + 12 protons
= 23

Therefore, the mass number of Atom B is 23.

To calculate the mass number of an atom, you need to know the number of protons and neutrons in its nucleus, because the mass number is the sum of both.

In this case, Atom B has 11 neutrons and 12 protons. To find the mass number, you simply add these two values together.

12 (protons) + 11 (neutrons) = 23

Therefore, the mass number of Atom B is 23.