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प्रश्न
Name or state following with reference to the element of the first three periods of the periodic table.
The non-metallic element present in period 3 other than sulphur and chlorine.
उत्तर
P [Phosphorus]
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संबंधित प्रश्न
Two elements ‘A’ and ‘B’ belong to the 3rd period of Modern periodic table and are in group 2 and 13, respectively. Compare their following characteristics in tabular form:-
(a) Number of electrons in their atoms
(b) Size of their atoms
(c) Their tendencies to lose electrons
(d) The formula of their oxides
(e) Their metallic character
(f) The formula of their chlorides
The electrons in the atoms of four elements A, B, C and D are distributed in three shells having 1, 3, 5 and 7 electrons in the outermost shell respectively. State the period in which these elements can be placed in the modern periodic table. Write the electronic configuration of the atoms of A and D and the molecular formula of the compound formed when A and D combine.
Write any one difference in the electronic configurations of group-1 and group-2 elements ?
Why do elements in the same group show similar properties but the elements in different groups show different properties?
How does the tendency to lose electrons change as we go down in group 1 of the periodic table? Why does it change this way?
An element which is an essential constituent of all organic compounds belongs to following group of modern periodic table:
(a) group 4
(b) group 14
(c) group 15
(d) group 16
In each of the following pair, choose the atom having the bigger size:
Na (At. No. 11) or K (At. No. 19)
State the number of elements in periods 1, Periods 2, and Period 3 of the periodic table. Name them.
Name and state the following with reference to the elements of the first three periods of the periodic table.
Metalloid in Period 3.
Select the correct answer from the options given below.
It is a metal in period 2 having electronic configuration 2, 1?
