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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
Calcium is an element with atomic number 20. Stating reason, answer each of the following questions:-
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(ii) Will its atomic radius be larger or smaller than that of potassium with atomic number 19?
(iii) Write the formula of its oxide.
Which element has the electronic configuration 2, 8, 2?
How does the number of valence electrons vary on moving from left or right in the second period of the periodic table?
Where would you locate the element with electronic configuration 2, 8 in the modern periodic table?
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name of the element,
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twice as many electrons in its second shell as in its first shell?
Explain
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- What is the group number of T?
- What is the period number of T?
- How many valence electrons are there in an atom of T?
- What is the valency of T?
- Is it a metal or non-metal?
- State number of protons and neutrons in T.
Name and state the following with reference to the elements of the first three periods of the periodic table.
Non-metallic elements present in Period 3 of Groups 15 and 16.
An element A has 2 electrons in its fourth shell. State:
position in the periodic table
