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प्रश्न
According to Mendeleev’s periodic law, properties of elements are periodic function of their _______.
पर्याय
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
Name three elements that have a single electron in their outermost shells.
Name two elements that have two electrons in their 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?
On what basis elements are arranged in periodi table now?
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?
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.
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.
Name an element whose properties were predicted on the basis of its position in Mendeleev's periodic table.
Name two elements whose atomic weights were corrected on the basis of their positions in Mendeleev's periodic table.
What are the demerits of Mendeleev’s periodic table?
Give a reason for the following:
Mendeleev's contributions to the periodic table laid the foundation for the Modern Periodic Table.
In Mendeleev’s periodic table eka- silicon was later named as _______.
Which two elements show an ambiguity regarding their sequence in Mendeleev’s periodic table?
Write scientific reason.
Mendeleev kept vacant places in the periodic table.
State Mendeleev’s Periodic Law.
On which basis Mendeleev organised periodic law?
What physical and chemical properties of elements did Mendeleev consider in compiling the periodic table?
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?
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
Which of the following properties does not match the element of the halogen family?
The total number of electrons present in the first twenty elements of the periodic table is ______
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
In Mendeléev’s Periodic Table the elements were arranged in the increasing order of their atomic masses. However, cobalt with atomic mass of 58.93 amu was placed before nickel having an atomic mass of 58.71 amu. Give reason for the same.
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.
Mendeleev's periodic table was based on ______.
