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प्रश्न
______ and ______ are called inner transition elements.
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उत्तर
Lanthanides and Actinides are called inner transition elements.
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संबंधित प्रश्न
The atomic particle whose number in the atoms of an element always remains the same and which forms the real basis for the modern classification of elements is:
(a) electron
(b) proton
(c) neutron
(d) meson
What is the major characteristic of the first elements in the periods of the periodic table? What is the general name of such elements?
State how the valency of elements varies in a period of the periodic table?
How many periods and groups are there in the modern periodic table?
Give the chemical formula of ammonium sulphate
Write a scientific reason.
Lithium and sodium are included in the same group in the periodic table.
An X element with atomic number 11 and Y element with atomic number 13 belongs to the third period in the modern periodic table. With this information, give the answers of the below questions.
- Which element has more metallic character from these two elements?
- What is the valency of each X and Y elements?
- Atom size of Y element is smaller than atom size of X element? Explain?
The longest period of the Modern Periodic Table is period.
Which of the following statements about the Modern Periodic Table is correct:
The maximum number of electrons that can be accommodated in s, p,d, and f subshells are ______.
