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प्रश्न
Name and state the following with reference to the elements of the first three periods of the periodic table.
Metalloid in Period 3.
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उत्तर
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संबंधित प्रश्न
What happens to the metallic character of the elements as we move from left to right in a period of the periodic table?
Given alongside is a part of the periodic table. As we move vertically downward from Li to Fr:
| Li | Be |
| Na | |
| K | |
| Rb | |
| Cs | |
| Fr | Ra |
What happens to their metallic character?
What do you understand by periodicity?
An element X belong to 4th period and 17th group, state.
no of valence electrons in it
Calculate the valency of element X whose atomic number is 9.
Arrange the following as per instruction given in the bracket.
K, Pb, Ca, Zn (increasing reactivity)
Element P has atomic number 19. To which group and period, does P belong? Is it a metal or a non-metal? Why?
An element A has 2 electrons in its fourth shell. State:
position in the periodic table
What is meant by a Group in the Periodic Table?
State the property trends in general of elements on moving down in a group of the periodic table.
