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प्रश्न
Properties of the elements are given below. Where would you locate the following elements in the periodic table?
- A soft metal stored under kerosene
- An element with variable (more than one) valency stored under water.
- An element which is tetravalent and forms the basis of organic chemistry
- An element which is an inert gas with atomic number 2
- An element whose thin oxide layer is used to make other elements corrosion resistant by the process of “ anodising”
उत्तर
- A soft metal stored under kerosene is sodium. Sodium is located at 1st group and 3rd period in the periodic table.
- An element with variable (more than one) valency stored underwater is phosphorus, it is located at 15th group and 3rd period in the periodic table.
- An element which is tetravalent and forms the basis of organic chemistry is carbon, it is located at 14th group and 2nd period in the periodic table.
- An element which is an inert gas with atomic number 2 is helium, it is located at 18th group and 1st period in the periodic table.
- An element whose thin oxide layer is used to make other elements corrosion-resistant by the process of “ anodising” is aluminium, it is located at 13th group and 3rd period in the periodic table.
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संबंधित प्रश्न
State any three demerits of Mendeleev’s periodic table.
On what basis did mandeleev arrange the elements in his periodic table?
How did Mendeleev's arrangement of elements correlate with the periodicity of the properties of elements?
At the time of Mendeleev _______ elements were known.
Beryllium : alkaline earth metal : : sodium: _______
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?
An element has 12 protons. The group and period to which this element belongs is ______
Which of the following oxide is most basic?
Mendeleev's periodic table was based on ______.
