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प्रश्न
Name or state following with reference to the element of the first three periods of the periodic table.
A metal in period 3 having valency 3.
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उत्तर
Metal in period 3 is A1 [Aluminium]
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संबंधित प्रश्न
What do you understand by periodicity?
State the valency of the elements of periods 3 and write the formula of their oxides.
Name the element of lower nuclear charge out of Be and Mg.
Calculate the valency of element X whose atomic number is 9.
K, Pb, Ca, Zn (In the increasing order of the reactivity)
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 |
To which period do these elements belong?
With reference to the variation of properties in the Periodic table, which of the following is generally true?
The position of certain elements in the Modern Periodic Table is shown below:
| Group → Period ↓ |
1 | 2 | 3 to 12 | 13 | 14 | 15 | 16 | 17 | 18 |
| 1 | G | H | |||||||
| 2 | A | I | B | C | |||||
| 3 | D | E | F |
Using the above table answer the following questions giving reasons in each case:
- Which element will form only covalent compounds?
- Which element is a non-metal with valency 2?
- Which element is a metal with valency 2?
- Out of H, C, and F which has the largest atomic size?
- To which family does H, C, and F belong?
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.
Name or state following with reference to the element of the first three periods of the periodic table.
A non-metal in period 2 which is tetravalent.
