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प्रश्न
State Mendeleev’s Periodic Law.
उत्तर
Mendeleev’s periodic law states that "The properties of elements are a periodic function of their atomic masses."
संबंधित प्रश्न
Use Mendeleev’s Periodic Table to predict the formulae for the oxides of the following elements:
K, C, Al, Si, Ba.
Name three elements with filled outermost shells.
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?
State any three demerits of Mendeleev’s periodic table.
On what basis did mandeleev arrange the elements in his periodic table?
State whether the following statement is true of false:
According to Mendeleev's periodic law, the properties of elements are a periodic function of their atomic numbers.
Name the Russian chemist who said that the properties of elements are a periodic function of their atomic masses.
What were the two criteria used by Mendeleev to classify the elements in 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.
Mendeleev's contributions to the concept of a periodic table laid the foundation for the Modern Periodic Table. Give reasons.
Use Mendeleev's Periodic Table to predict the formula of hydrides of carbon and silicon.
Use Mendeleev's Periodic Table to predict the formula of oxides of potassium, aluminum, and barium.
Why did Mendeleev's leave some gaps in his periodic table os elements? Explain your answer with an example.
Name two elements whose atomic weights were corrected on the basis of their positions in Mendeleev's periodic table.
How many elements were known at the time of Mendeleev's classification of elements?
How did Mendeleev arrange the elements in the periodic table?
What was the basis of Mendeleev's classification?
State the contributions made by Mendeleev towards the periodic table.
According to Mendeleev’s periodic law, properties of elements are periodic function of their _______.
At the time of Mendeleev _______ elements were known.
In Mendeleev’s periodic table eka- silicon was later named as _______.
Beryllium : alkaline earth metal : : sodium: _______
Which two elements show an ambiguity regarding their sequence in Mendeleev’s periodic table?
Write scientific reason.
There was no definitive place for isotope in Mendeleev’s periodic table.
Distinguish between:
Mendeleev’s periodic table - Modern periodic table
What physical and chemical properties of elements did Mendeleev consider in compiling the periodic table?
What challenges did Mendeleev face in following periodic law?
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 statement (s) about the Modern Periodic Table are incorrect
- The elements in the Modern Periodic Table are arranged on the basis of their decreasing atomic number
- The elements in the Modern Periodic Table are arranged on the basis of their increasing atomic masses
- Isotopes are placed in adjoining group (s) in the Periodic Table
- The elements in the Modern Periodic Table are arranged on the basis of their increasing atomic number
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.
State Mendeleev’s Law of Periodicity.
