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प्रश्न
State how the valency of elements varies in a period of the periodic table?
उत्तर
In a period, different elements have different valencies. On moving from left to right in a period, the valency of the elements increases from 1 to 4 and then decreases to 0.
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संबंधित प्रश्न
What is the usual number of valence electrons and valency of group 18 elements of the periodic table?
What happens to the number of valence electrons in the atoms of elements as we go down in a group of the periodic table?
An element A has 2 electrons in its fourth shell. State its electronic configuration.
Two elements P and Q belong to the same period of the modern periodic table and are in group 1 and group 2, respectively. Compare the following characteristics in the tabular form.
- Number of electrons in their atoms
- Their tendency to lose electrons
- Their metallic characters
- Formation of their oxides
- Formulae of their chlorides
Name the following:
The group of the Modern Periodic Table to which calcium [Ca2+] belongs.
What are the periods in a periodic table?
Distinguish between:
s-block - p-block
Arrange the following elements in the increasing order of their metallic character
| Mg, | Ca, | K, | Ge, | Ga |
1H2 is an isotope of hydrogen. In the modern Periodic Table it will ______.
Match the atomic number with the following:
A rare gas.
