IGCSE A Level Chemistry MCQs - Chapter 9

Electrons in Atoms Multiple Choice Questions (MCQ) PDF - 2

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The MCQ: Electronic configuration of chromium is; "Electrons in Atoms" App Download Android & iOS (Free) with answers [ar]2d⁴,4s², [ar]2d⁵,4s¹, [ar]2d⁵,4s² and [ar]2d⁴,4s¹ to study IGCSE GCE certificate courses. Practice electronic configurations quiz questions, download Apple Book (Free Sample) for best online SAT prep class.

Electrons in Atoms Questions & Answers PDF Download: MCQ Quiz 2

MCQ 6: The electronic configuration of chromium is

[Ar]2d⁵,4s¹
[Ar]2d⁴,4s²
[Ar]2d⁵,4s²
[Ar]2d⁴,4s¹

MCQ 7: Electrons occupy separate orbital within the same sub-shell to reduce

attraction
repulsion
polarity
conductivity

MCQ 8: The magnitude of ionization energy depends upon

number of positive charges
shielding effect increases
spin pair repulsion
all of above

MCQ 9: Whenever there is no empty orbital is available within sub-shell, electrons are

deflected
reflected
paired
charged

MCQ 10: There is less attraction between the fifth electron of Boron and nucleus, hence that electron resides in

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