Question

a single atom of an element has 11 protons, 11 electrons, and 12 neutrons. which element is it?
o v
o na
o mg
o se

Explanation:

Step1: Recall element - proton relationship

The atomic number of an element is equal to the number of protons in its atom.

Step2: Identify the element

Since the atom has 11 protons, its atomic number is 11. Sodium (Na) has an atomic number of 11.

Answer:

Na