Science MCQs
Practice multiple choice questions with instant feedback. Select an option to see if you're correct.
The Latin name 'Natrium' gives us the symbol for which element?
What is the atomic number of an element defined as?
Which subatomic particle is responsible for the chemical properties of an element?
What is the maximum number of electrons the M shell (n=3) can hold?
An element X has a mass number of 23 and atomic number 11. How many neutrons are present in its atom?
Which of the following elements has a completely filled outermost shell?
Isotopes of an element have the same number of _____ but different number of _____.
What is the valency of an element with atomic number 12 (Magnesium)?
An atom has 3 protons and 4 neutrons. What is its mass number?
What is the primary basis for the arrangement of elements in the Modern Periodic Table?
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