Multiple Choice
Which of the following best describes the ground state of an atom?
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2. Atoms & Elements
The Atom
Multiple Choice
Which four elements make up the majority of the human body by mass?
A
Nitrogen, chlorine, magnesium, zinc
B
Calcium, sodium, potassium, iron
C
Oxygen, carbon, hydrogen, nitrogen
D
Carbon, hydrogen, sulfur, phosphorus
Verified step by step guidance1
Understand that the question asks for the four elements that constitute the majority of the human body by mass.
Recall that the human body is primarily composed of elements that form organic molecules and water.
Identify that oxygen, carbon, hydrogen, and nitrogen are the most abundant elements in the human body, making up about 96% of its mass.
Recognize that other elements like calcium, sodium, potassium, iron, sulfur, and phosphorus are present but in smaller amounts.
Conclude that the correct set of elements is oxygen, carbon, hydrogen, and nitrogen.
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