According to Mendeleev’s periodic law, the physical and chemical properties of elements are the periodic function of their …………..
(A) atomic weights
(B) atomic numbers
(C) molecular formulas
(D) molecular weights
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Modern periodic law states that the properties of elements are periodic functions of their
D) both B and C
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As per modern periodic law, the properties of the elements are periodic functions of their
C) atomic numbers
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The property of an element to exist in two or more physical forms with same chemical properties but different physical properties is called
C) allotropy
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Give reason: Mendeleev’s periodic law was modified into modern periodic law.
Henry Moseley in 1913, studied X-ray spectra of large number of elements. He observed that the frequency of X-ray emitted from an element is related to atomic number (Z) of an...
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Mendeleev’s periodic table had …………… elements.
Correct option is (C) 63 At that time, Mendeleev's periodic table had 63 elements.
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Mendeleev’s periodic table had …………… elements.
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According to Mendeleev’s periodic law, the physical and chemical properties of elements are the periodic function of their …………..
Correct option is: (A) atomic weights According to Mendeleev's periodic law, the Physical and Chemical properties of elements are the periodic function of their atomic weight
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According to periodic law of elements, the variation in properties of elements is related to their ……………
Correct option is: (D) atomic numbers According to Modern periodic law of elements, the variation in properties of elements is related to their atomic number.
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According to periodic law of elements, the variation in properties of elements is related to their ……………
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How could the Modern periodic table remove various anomalies of Mendeleev’s periodic table?
The Modern periodic table removed various anomalies of Mendeleev’s periodic table as follows: i. All isotopes of the same element have different atomic masses but same atomic number. Therefore, they occupy...
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