Structure of Atom Sample Questions for Class 11
Question 1
An atom of which element has the ground-state electron configuration 1s^2 2s^2 2p^6 3s^1?
A. fluorine
B. sodium
C. chlorine
D. magnesium
Question 2
Given the number of valence electrons shown in the diagram, what can you conclude about this element?
A. It is nonreactive.
B. It only reacts with elements with 6 valence electrons.
C. It is reactive with elements that have 1 valence electron.
D. None of the above
Question 3
What are the primary components of an atom?
A. Protons and neutrons
B. Electron cloud and nucleus
C. Electrons in the nucleus
Question 4
Valence electrons are best described in chemistry as
A. positive electrons in the atom.
B. all of the electrons in the atom.
C. the outer shell electrons in the atom.
D. the number of electrons the atom needs to be stable.
Question 5
Which of these describes an electron?
A. has no charge
B. is not present in the atom's energy shells
C. is a single positive charge
D. is a single negative charge