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 12
An atom has 13 protons, 14 neutrons, and 13 electrons. What is its mass number?
An atom of calcium has 20 protons and 20 neutrons. What is its symbol in the form AZX?
An atom of chlorine has 17 protons and 18 neutrons. What is its mass number?
An atom of element X has 20 protons, 20 neutrons, and 20 electrons. What is its mass number?
An atom of iron has 26 protons and 30 neutrons. What is its mass number?
An atom of potassium has an atomic number of 19 and a mass number of 39. How many neutrons does it have?
If an atom has 10 protons, 10 neutrons, and 10 electrons, what is its mass number?
If an atom has 15 protons and 16 neutrons, what is its atomic number and mass number?
If an atom has 2 protons, 2 neutrons, and 2 electrons, what is its atomic number and mass number?
If an atom has 6 protons, 6 neutrons, and 6 electrons, what is its atomic number and mass number?
If an atom has an atomic number of 7 and a mass number of 15, how many neutrons does it have?
If an atom has an atomic number of 8 and a mass number of 16, how many neutrons does it have?
The atomic number of an element is 16. What is the name of the element?
The atomic number of an element is 3. How many electrons are present in a neutral atom of this element?
The atomic number of an element is 9. What is the name and symbol of this element?
The atomic number of sodium is 11. How many protons are present in a sodium atom?
The symbol for an atom is written as AZX. What does Z represent?
What is the atomic number of an element?
