Consider the following figure. Which of the following correctly identifies the quantities labeled 1,2,and 3?
A)1 - atomic mass, 2 - element name, 3 - mass number
B)1 - atomic number, 2 - element symbol, 3 -atomic mass
C)1 - mass number , 2 - element symbol, 3 - atomic mass
D)1 - mass number, 2 - element name, 3 - atomic number
E)1 - atomic number, 2 - element symbol, 3 - mass number

Question

Consider the following figure.  Which of the following correctly identifies the quantities labeled 1,2,and 3?
A)1 - atomic mass, 2 - element name, 3 - mass number 
B)1 - atomic number, 2 - element symbol, 3 -atomic mass 
C)1 - mass number , 2 - element symbol, 3 - atomic mass 
D)1 - mass number, 2 - element name, 3 - atomic number 
E)1 - atomic number, 2 - element symbol, 3 - mass number

Quizplus · Accepted Answer

1 is labeled as atomic number, which is the number of protons in the nucleus of an atom.
2 is labeled as element symbol, which is a one or two-letter representation of the name of an element.
3 is labeled as atomic mass, which is the total number of protons and neutrons in an atom.

Consider the Following Figure