IGCSE A Level Chemistry MCQs - Chapter 9

Electrons in Atoms Trivia Questions and Answers PDF - 8

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Electrons in Atoms Questions & Answers PDF Download: MCQ Quiz 8

MCQ 36: Each principal quantum shell consists of different numbers of

orbitals
magnetic field
electric field
electromagnetic field

MCQ 37: The less amount of attraction between the nucleus and outer electrons is due to

increase in distance only
increase in shielding effect only
decrease in distance
increase in distance and shielding effect

MCQ 38: The process by which electrons spin and pair up against each other is called

spin-pair repulsion
pair-spin repulsion
spin-repulsion
paired-spin repulsion

MCQ 39: Boron has one more proton than

helium
beryllium
carbon dioxide
nitrogen

MCQ 40: Electron number from 2^nd to 9^th are present in same shell because the change in ionization is

high to low
low to high
gradual
lastly

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