Atomic Number and Mass Number
Chemistry ⇒ Atomic Structure and the Periodic Table
Atomic Number and Mass Number starts at 7 and continues till grade 12.
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See sample questions for grade 7
An atom has 16 protons and 16 neutrons. What is its mass number?
An atom has 2 protons, 2 neutrons, and 2 electrons. What is its atomic number and mass number?
An atom has an atomic number of 7 and a mass number of 15. How many neutrons does it have?
An atom of chlorine has 17 protons and 18 neutrons. What is its mass number?
An atom of sodium has 11 protons, 12 neutrons, and 11 electrons. What is its mass number?
Describe how you would find the number of neutrons in an atom if you know its atomic number and mass number.
Explain why isotopes of the same element have different mass numbers but the same atomic number.
If an atom has 1 proton, 0 neutrons, and 1 electron, what is its atomic number and mass number?
If an atom has 10 protons and 12 neutrons, what is its mass number?
If an atom has 14 protons, 14 neutrons, and 14 electrons, what is its mass number?
If an atom has 20 protons, 20 neutrons, and 20 electrons, what is its atomic number?
If an atom has 3 protons, 4 neutrons, and 3 electrons, what is its atomic number and mass number?
If an atom has 6 protons and 7 neutrons, what is its mass number?
If an atom has an atomic number of 15 and a mass number of 31, how many neutrons does it have?
The atomic number of an element is 12. How many electrons are present in a neutral atom of this element?
The atomic number of an element is 9. What is the name of this element?
What is the atomic number of an atom with 18 electrons in a neutral state?
What is the atomic number of an element?
What is the atomic number of carbon?
What is the difference between atomic number and mass number?
