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Class 11 Chemistry Practice Test: Classification of Elements and Periodicity in Properties - Modern Periodic Law and the Present Form of the Periodic Table
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Avg score: 77% • Most missed: “What does Z represent in the above graph?”

The modern periodic law states that the physical and chemical properties of the elements are the periodic functions of their atomic numbers. Elements are arranged in increasing order of their atomic numbers from left to right across each row.

Class 11 Chemistry Practice Test: Classification of Elements and Periodicity in Properties - Modern Periodic Law and the Present Form of the Periodic Table
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10 Questions

1. Henry Moseley’s law is given by the equation \(\sqrt{v}\) = a(Z – b). What do a and b represent here?
2. Which was the incomplete period in the long-form of the modern periodic table?
3. ____________ observed the X-rays’ characteristics.
4. Henry Moseley’s law is given by the equation \(\sqrt{v}\) = a(Z – b). What do a and b represent here?
5. Which was the incomplete period in the long-form of the modern periodic table?
6. What does Z represent in the above graph?
Graph states Henry Moseley’s law for frequency of X-rays emitted & Z depicts atomic number
7. The period’s number corresponds to the highest _________
8. The physical and chemical properties of an element are the periodic function of its _________
9. What does Z represent in the above graph?
Graph states Henry Moseley’s law for frequency of X-rays emitted & Z depicts atomic number
10. The horizontal rows in Mendeleev’s periodic table were called as __________

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