Adaptive Practice
Atomic Structure
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Question 1 of 10
⏱ 0:30
Easy
What is the charge of a proton in an atom?
Easy
Which subatomic particle has negligible mass compared to protons and neutrons?
Easy
The atomic number of an element represents:
Medium
Which of the following represents an isotope of carbon?
Medium
If an atom has 17 protons, 18 neutrons, and 17 electrons, what is its mass number?
Medium
Which of the following statements about neutrons is correct?
Medium
The number of electrons in the outermost shell of sodium (Na) atom is:
Hard
Which quantum number describes the shape of an atomic orbital?
Easy
Calculate the number of neutrons in an atom of chlorine-37 (Cl-37) if its atomic number is 17.
Hard
Which of the following correctly represents the electronic configuration of Fe (atomic number 26)?