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प्रश्न
State Mendeleev's periodic law.
उत्तर
Mendeleev's periodic law: “The physical and chemical properties of all the elements are a periodic function of their atomic masses.”
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संबंधित प्रश्न
What are the main features of Mendeleev’s periodic table?
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.
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?
State Mendeleev's periodic law.
List two contrasting visible characters of garden pea Mendel used for his experiment.
Explain in brief how Mendel interpreted his results to show that the traits may be dominant or recessive.
Why did Mendeleev's leave some gaps in his periodic table os elements? Explain your answer with an example.
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?
What are the demerits of Mendeleev’s periodic table?
How did Mendeleev's arrangement of elements correlate with the periodicity of the properties of elements?
State the contributions made by Mendeleev towards the periodic table.
Give a reason for the following:
Mendeleev's contributions to the periodic table laid the foundation for the Modern Periodic Table.
According to Mendeleev’s periodic law, properties of elements are periodic function of their _______.
At the time of Mendeleev _______ elements were known.
Write scientific reason.
Mendeleev kept vacant places in the periodic table.
Write scientific reason.
There was no definitive place for isotope in Mendeleev’s periodic table.
State Mendeleev’s Periodic Law.
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?
At the time of Mendeleev, the number of elements known was ______
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?
The total number of electrons present in the first twenty elements of the periodic table is ______
Eka-aluminium and Eka-silicon are known as ______
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
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.
Write the formulae of chlorides of Eka-silicon and Eka-aluminium, the elements predicted by Mendeléev.
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”?
