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प्रश्न
According to Mendeleev’s periodic law, properties of elements are periodic function of their _______.
विकल्प
Atomic numbers
Atomic masses
Densities
Boiling points
उत्तर
According to Mendeleev’s periodic law, properties of elements are periodic function of their atomic masses.
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संबंधित प्रश्न
What are the main features of Mendeleev’s periodic table?
Lithium, sodium, potassium are all metals that react with water to liberate hydrogen gas. Is there any similarity in the atoms of these elements?
By considering their position in the Periodic Table, which one of the following elements would you expect to have maximum metallic characteristic?
On what basis elements are arranged in periodi table now?
What were the two criteria used by Mendeleev to classify the elements in his periodic table?
What chemical properties of elements were used by Mendeleev in creating his periodic table?
(a) Write its electronic configuration and determine its valency.
(b) Is it more reactive or less reactive than Ca (atomic number 20)? Justify your answer giving reason.
(c) Is it a metal or a non-metal?
(d) Write the formula of its oxide.
List two contrasting visible characters of garden pea Mendel used for his experiment.
Use Mendeleev's Periodic Table to predict the formula of hydrides of carbon and silicon.
Name an element whose properties were predicted on the basis of its position in Mendeleev's periodic table.
How many elements were known at the time of Mendeleev's classification of elements?
Answer the following question:
Name two elements having a single electron in their outermost shell.
What was the basis of Mendeleev's classification?
What were the defects and anomalies in Mendeleeff's Periodic Table and how are they resolved by Moseley?
At the time of Mendeleev _______ elements were known.
Beryllium : alkaline earth metal : : sodium: _______
Which two elements show an ambiguity regarding their sequence in Mendeleev’s periodic table?
Distinguish between:
Mendeleev’s periodic table - Modern periodic table
On which basis Mendeleev organised periodic law?
What challenges did Mendeleev face in following periodic law?
What are the limitations of Mendeleev's periodic table?
In Mendeleev’s Periodic Table, gaps were left for the elements to be discovered later. Which of the following elements found a place in the Periodic Table later?
The properties of eka-aluminum predicted by Mendeleev are the same as the properties of a later discovered elements: ______
Which of the following oxide is most basic?
Which of the following are the characteristics of isotopes of an element?
(i) Isotopes of an element have the same atomic masses
(ii) Isotopes of an element have the same atomic number
(iii) Isotopes of an element show the same physical properties
(iv) Isotopes of an element show the same chemical properties
Eka-aluminium and Eka-silicon are known as ______
According to Mendeléev's Periodic Law, the elements were arranged in the periodic table in the order of
In Mendeléev’s Periodic Table, gaps were left for the elements to be discovered later. Which of the following elements found a place in the periodic table later
On moving from left to right in a period in the periodic table, the size of the atom.
Which group of elements could be placed in Mendeléev's Periodic Table without disturbing the original order? Give reason.
Give an account of the process adopted by Mendeléev for the classification of elements. How did he arrive at “Periodic Law”?
State Mendeleev’s Law of Periodicity.
List the features of Mendeleev’s Periodic Table.
