Question

What is the atomic number for an element whose mass number is 115, which contains 66 neutrons per atom?

Answer 1

The atomic number for an element whose mass number is 115, which contains 66 neutrons per atom is: 49

The formula and procedure we will use to solve this problem is:

• number of protons = mass number - number of neutrons
• atomic number = number of protons

Information about the problem:

• mass number = 115
• number of neutrons = 66
• atomic number =?

Applying the number of protons formula  we get:

number of protons = mass number - number of neutrons

number of protons = 115 - 66

number of protons = 49

Applying the atomic number formula  we get:

atomic number =number of protons

atomic number = 49

What is an atom?

The atom is the smallest part of the composition of matter, it is indivisible and is composed of a nucleus that has protons and neutrons, and around the nucleus there are the electrons.

Learn more about the atom at: brainly.com/question/17545314

#SPJ4