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प्रश्न
An element belongs to the third period and Group IIIA (13) of the periodic table. State: the valency,
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उत्तर
The valency is +3.
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संबंधित प्रश्न
Write any one difference in the electronic configurations of group-1 and group-2 elements ?
The atomic number of an element is 20. In modern periodic table, this element is placed:
(a) 2nd period
(b) 4th period
(c) 3rd period
(d) 1st period
Which of the following element would lose an electron easily?
(a) Mg
(b) Na
(c) K
(d) Ca
Choose the most appropriate answer from the following list of oxides which fit the description.
A basic oxide.
The position of elements A, B, C, D and E in the periodic table are shown below:
|
Group 1 |
Group 2 |
Group 17 |
Group 18 |
|
|
|
|
D |
|
|
B |
C |
|
|
A |
|
|
E |
State which is metals, non-metals, and noble gas in this table.
Element P has atomic number 19. To which group and period, does P belong? Is it a metal or a non-metal? Why?
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Metalloid in Period 3.
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Based on the group valency of element write the molecular formula of the following compound giving justification:
Compound formed when an element A of group 2 combines with an element B of group seventeen.
The similarities in the properties of a group of elements are because they have the same ______.
