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प्रश्न
An element belongs to the third period and Group IIIA (13) of the periodic table. State: the name of the element.
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उत्तर
The name of the element is Aluminium.
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संबंधित प्रश्न
How do the atomic size and metallic character of elements vary as we move :-
(a) down a group and
(b) from left to right in a period
Why does the size of the atoms progressively become smaller when we move from sodium (Na) to chlorine (Cl) in the third period of the periodic table?
In each of the following pair, choose the atom having the bigger size:
(a) Mg (At. No.12) or Cl (At. No.17)
Fill in the blank:
on moving from right to left in the second period, the number of valence electrons……….
How do the following change on moving from left to right in a period of the periodic table?
Give examples in support of your answer.
atomic structure (electron arrangements) ?
Complete the following sentences.
The properties of the elements are a periodic function of their …………… (atomic number, mass number, reative atomic mass).
Write two reasons responsible for late discovery of noble gases ?
Explain
Size of atom changes when it loses or gain electron
Name and state the following with reference to the elements of the first three periods of the periodic table.
Valency of elements in Group 14 and 15.
What is the common feature of the electronic configuration of the elements at the end of Period 2 and Period 3?
