10 Multiple Choice Questions on Atomic Number
1. What does the atomic number of an element represent?
Number of neutrons
Number of protons
Number of electrons only
Atomic mass
Correct Answer
Wrong Answer
2. Which element has an atomic number of 1?
Helium
Oxygen
Hydrogen
Nitrogen
Correct Answer
Wrong Answer
3. How are elements arranged in the periodic table?
By atomic mass
By atomic number
By density
By melting point
Correct Answer
Wrong Answer
4. An element with an atomic number of 8 is:
Nitrogen
Helium
Carbon
Oxygen
Correct Answer
Wrong Answer
5. What is the symbol for atomic number?
A
M
Z
X
Correct Answer
Wrong Answer
6. The atomic number of carbon is:
6
8
12
14
Correct Answer
Wrong Answer
7. Which property of an atom does the atomic number primarily determine?
Mass
Electronegativity
Chemical properties
Density
Correct Answer
Wrong Answer
8. The periodic table is organized in ascending order of:
Atomic number
Atomic mass
Neutron count
Energy levels
Correct Answer
Wrong Answer
9. When an atom gains or loses protons, it becomes a:
Molecule
Different isotope
Different element
Ion
Correct Answer
Wrong Answer
10. What is indirectly equal to the atomic number in a neutral atom?
Mass number
Neutron number
Electron count
Atomic radius
Correct Answer
Wrong Answer
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