Adaptive Practice
Atomic Structure
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Question 1 of 10
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Easy
What is the charge of an electron?
Easy
Which subatomic particle has no electric charge?
Easy
The atomic number of an element is equal to the number of:
Medium
An atom of an element has 17 protons and 18 neutrons. What is its mass number?
Medium
Which of the following represents an isotope of chlorine?
Medium
In Bohr’s atomic model, electrons revolve around the nucleus in:
Hard
Which of the following statements about isotopes is correct?
Medium
If an atom has 11 electrons arranged in shells as 2,8,1, which element does it represent?
Hard
What is the total number of electrons in the third shell of an atom with atomic number 20?
Easy
Which scientist is credited with discovering the nucleus of the atom through the gold foil experiment?