객관식
Which of the following best describes how to calculate the average atomic mass of an element?
117
views
2. Atoms & Elements
Atomic Mass
Multiple Choice
Based on the information in the figure, what is the atomic number of chlorine?
A
16
B
35
C
18
D
17
검증된 단계별 안내1
Understand that the atomic number of an element is the number of protons in the nucleus of an atom of that element.
Recall that chlorine is represented by the symbol 'Cl' on the periodic table.
Look up chlorine on the periodic table or in the provided figure to find its atomic number, which is usually displayed above the element symbol.
Identify the atomic number associated with chlorine; this number is unique to chlorine and defines its position in the periodic table.
Confirm that the atomic number corresponds to 17, which means chlorine has 17 protons.
Related Videos
Related Practice
