Science MCQs
Practice multiple choice questions with instant feedback. Select an option to see if you're correct.
How many neutrons are in an atom of Fluorine with a mass number of 19?
Which element has an atomic number of 17?
What is the valency of Neon (Atomic Number = 10)?
How many valence electrons does Oxygen (Atomic Number = 8) have?
Which period does the element with atomic number 11 (Sodium) belong to?
Which group does the element with 1 valence electron belong to?
What is the common name for Group 17 elements?
What is the mass number of an isotope of hydrogen that has 1 proton and 1 neutron?
How many electrons are in the outermost shell of a phosphorus atom (Z=15)?
An element X has mass number 27 and atomic number 13. How many neutrons does it have?
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