HARD
9th CBSE
IMPORTANT
Earn 100

Although protons and electrons possess opposite charges and protons can attract electrons, why is it that electrons do not fall into the nucleus? Why do electrons cannot go away to infinity?

Important Questions on Structure of the Atom

HARD
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 4 - Structure of the Atom>EXERCISES>Q 2
Can we call proton and neutron as elementary particles? Give reasons.
HARD
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 4 - Structure of the Atom>EXERCISES>Q 3
The structure of an atom is not yet completely solved and the latest particles discovered are gluons, quarks, antiquarks, and Higgs bosons. Protons and neutrons are made up of various combinations of quarks and gluons. If in the future any new elementary particles are discovered, can you speculate their properties?
HARD
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 4 - Structure of the Atom>EXERCISES>Q 4
Suggest a new structure of atom based on your present knowledge about the structure of atom, the latest being Bohr's model of atom and discovery of gluons, quarks, antiquarks and Higgs Bosons in the nucleus of an atom.
HARD
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 4 - Structure of the Atom>EXERCISES>Q 5
Transition metal (At. No. 21-29) compounds are usually coloured. Can you speculate from your present knowledge of structure of atom, why are they coloured?
MEDIUM
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 4 - Structure of the Atom>EXERCISES>Q 6
Name the latest particle discovered in the structure of atom. Is it stable inside the nucleus? Is there still any other missing particles inside the nucleus?
EASY
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 4 - Structure of the Atom>EXERCISES>Q 7
Although some particles in the nucleus have lost mass, why is it that protons and neutrons do not lose mass?
EASY
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 4 - Structure of the Atom>EXERCISES>Q A
Cathode rays are produced when high voltage is applied across a gas under
EASY
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 4 - Structure of the Atom>EXERCISES>Q A
Which of the following statements is not correct regarding anode rays?