Question

choose the correct answer. which of these is the atomic mass of cobalt (co)? 27 58.933 co

Explanation:

Step1: Recall atomic - mass concept

Atomic mass is the average mass of atoms of an element.

Step2: Know cobalt's atomic - mass value

The atomic mass of cobalt (Co) is approximately 58.933 u. The number 27 is cobalt's atomic number, and "Co" is its chemical symbol.

Answer:

58.933