Class 9 Chemistry MCQs - Chapter 4
Periodic Table and Periodicity Multiple Choice Questions (MCQs) PDF Download - 1
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The Multiple Choice Question (MCQ): Both elements of 1st period contain valence electrons in; "Periodic Table and Periodicity" App Download (Free) with answers: N shell; M shell; K shell; S shell; to learn online classes courses. Solve Periodic Table MCQ Questions, download Google eBook (Free Sample) for online education.
Periodic Table and Periodicity MCQs with Answers PDF Download: Quiz 1
Both elements of 1st period contain valence electrons in
- M shell
- N shell
- K shell
- S shell
In the periodic table, helium is placed at
- top left corner
- bottom right corner
- bottom left corner
- top right corner
Across the period the atomic size decreases due to
- shielding effect
- photoelectric effect
- increase in nuclear force of attraction
- decrease in nuclear force of attraction
The first three periods are
- long periods
- short periods
- moderate periods
- all of above
On basis of electronic configuration the group and period of 95B is
- 2 and IIIA
- 3 and IIA
- 4 and VIA
- 5 and VIIA
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