HARD
9th CBSE
IMPORTANT
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An ion M+3 contains 10 electrons and 14 neutrons. What are the atomic number and mass number of the element M? Name the element

Important Questions on Structure of Atom

HARD
9th CBSE
IMPORTANT
The Science Springboard: A Foundation Course Based on NCERT Curriculum>Chapter 9 - Structure of Atom>Practice Questions
Write a metal ion and a non - metal ion each having a valency of 3. Calculate the number of electrons, protons and neutrons in each of them.
EASY
9th CBSE
IMPORTANT
The Science Springboard: A Foundation Course Based on NCERT Curriculum>Chapter 9 - Structure of Atom>Practice Questions
How will you find the valency of chlorine, sulphur and magnesium?
MEDIUM
9th CBSE
IMPORTANT
The Science Springboard: A Foundation Course Based on NCERT Curriculum>Chapter 9 - Structure of Atom>Practice Questions
Na has completely filled K and L shells. Explain.