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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
Differentiate between Normal elements and Transition elements.
Which one of the following does not increase while moving down the group of the periodic table?
An element A has atomic number 14. To which period does this element belong and how many elements are there in this period.
Which element has:
twice as many electrons in its second shell as in its first shell?
In the following table, the positions of six elements A, B, C, D, E and F are given as they are in the Modern Periodic Table :
 |
1 | 2 | 3-12 | 13 | 14 | 15 | 16 | 17 | 18 |
| 2 | A | B | C | D | |||||
| 3 | E | F |
On the basis of the above table, answer the following questions :
(i) Name the element which forms only covalent compounds.
(ii) Name the element which is a metal with valency three.
(iii) Name the element which is a non-metal with valency three.
(iv) Out of B and C, whose atomic radius is bigger and why ?
(v) Write the common name for the family to which the elements D and F belong.
Select the correct answer
Most reactive character among the elements given below is found in
What is the common feature of electronic configurations of the elements at the end of period 2 and period 3?
The elements of one short period of the periodic table are given below in order from left to right:
| Li | Be | B | C | O | F | Ne |
One element of this period is missing. Which is the missing element and where should it be placed?
Name or state following with reference to the element of the first three periods of the periodic table.
The valency of the element in period 3 having atomic number 17.
State the following:
The group to which the element with an electronic configuration of 2, 8, 2 belongs.
