Science MCQs
Practice multiple choice questions with instant feedback. Select an option to see if you're correct.
What is the maximum number of electrons the first shell (K) can hold?
What is the maximum number of electrons the second shell (L) can hold?
An atom with a stable electron configuration is most similar to a:
What is the charge of a particle that has gained two electrons?
The valency of an element is determined by the number of electrons in its:
What is the valency of Helium?
The chemical formula for common salt is:
Which of the following is a monoatomic molecule?
Which of the following is a diatomic molecule?
A group of atoms that behaves as a single unit and carries a charge is called a:
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