Question

Changing the number of protons in an atom would change which of the following ? Choose all that apply A. Atomic mass B. The identity of the element C. The charge of the atom D. None of the above

Answer 1

Changing the number of protons in an atom affects the element's identity, atomic mass, and charge. The atomic number, equal to the number of protons, is unique for each element and is essential for chemical identification and reactions.

Step-by-step explanation:

Changing the number of protons in an atom would change several things:

• The identity of the element: Since the atomic number, which is the number of protons in the nucleus, determines the element, changing this number would result in a different element.
• Atomic mass: Although mostly determined by protons and neutrons, the atomic mass of an atom (mass number) includes the number of protons. Thus, changing the number of protons would affect the atomic mass.
• The charge of the atom: If the number of protons is altered in an atom without adding or removing an equivalent number of electrons, the charge of the atom would change.

Moreover, because each element has a unique number of protons, this number is pivotal for scientists when identifying and working with different elements.