Practice MCQ Questions and answers on Chapter 7: Structure of Atoms Chemistry Mcqs for High School - Grade 9

A. 2s

B. 2p

C. 3s

D. 3p

A. Helium

B. Carbon

C. Thorium-234

D. Uranium-235

A. 2 electrons

B. 10 electrons

C. 14 electrons

D. 6 electrons

A. 0.35

B. 0.4

C. 0.5

D. 0.75

A. one neutron

B. two neutrons

C. no neutron

D. 3 neutrons

A. positively charged

B. doubly positively charged

C. negatively charged

D. doubly negatively charged

A. sum of energy levels

B. difference between energies of orbits

C. product of energies of orbits

D. none of above

A. derivatives

B. isotopes

C. elements

D. isomers

A. α particles

B. β particles

C. γ particles

D. neutrons

A. diagnose thyroid problem

B. image the brain

C. kill cancer cells

D. trace the blood flow