The atomic number for iron is ________.
A) 192.22
B) 77
C) 55.85
D) 26

Question

Quizplus · Accepted Answer

The atomic number of an element represents the number of protons in its nucleus. The atomic number for iron is 26, which means an iron atom has 26 protons in its nucleus. Option A is not a valid atomic number for any element, and option B is the atomic number for iridium, not iron. Option C is the atomic mass of iron, which represents the average mass of all the isotopes of iron.

The Atomic Number for Iron Is ________