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प्रश्न
Name the element which has the electronic configuration 2, 8, 3?
उत्तर
Aluminum (Al)
संबंधित प्रश्न
For each of the following triads, name the element with the characteristics specified below:
| Elements | Least atomic radius | Chemically least reactive |
| (i) F, Cl, Br (ii) Li, Na, K |
.................... .................... |
.................... .................... |
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?
The elements A, B, C, D and E have atomic numbers 9, 11, 17, 12 and 13 respectively. The pair of elements which belongs to the same group of the periodic table is:
(a) A and B
(b) B and D
(c) A and C
(d) D and E
An element has 2 electrons in its N shell.
State the name assigned to this group.
State the valency of the elements of periods 3 and write the formula of their oxides.
State the trends in physical properties on moving down the group. Give an example to illustrate.
Name the element of lower nuclear charge out of Be and Mg.
Select the correct answer
Most reactive character among the elements given below is found in
Name and state the following with reference to the elements of the first three periods of the periodic table.
Metalloid in Period 3.
Name the elements in Period 1.
