Question

Which of the following are correct statements?

Check all that apply.
A. The atomic number is the same for all elements.
B. An element is defined by the number of neutrons in its nucleus.
C. The number of protons an atom has defines what kind of element
it is.
D. The basic unit of matter is the atom.

Answer 1

C. The number of protons an atom has defines what kind of element it is.

D. The basic unit of matter is the atom.

are the correct statements.

A is incorrect because the atomic number is the number of protons in an atom, which is different for different elements.

B is incorrect because an element is defined by the number of protons it has in its nucleus (which determines its atomic number), not the number of neutrons.

Step-by-step explanation: