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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
An element Z has atomic number 16. Answer the following questions on Z:
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Arrange the following elements in the increasing order of their metallic character:
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What happens to the metallic character of the elements as we move from left to right in a period of the periodic table?
State one reason for keeping fluorine and chlorine in the same of the periodic table.
What do you understand by periodicity?
What do you understand by orbits?
Four elements P, Q, R and S belong to the third period of the Modern Periodic Table and have respectively 1, 3, 5 and 7 electrons in their outermost shells. Write the electronic configurations of Q and R and determine their valences. Write the molecular formula of the compound formed when P and S combine.
The elements of one short period of the periodic table are given below in order from left to right:
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(c) Place the three elements, fluorine, beryllium and nitrogen, in the order of increasing electro negativity.
(d) Which one of the above elements belongs to the halogen series?
Name and state the following with reference to the elements of the first three periods of the periodic table.
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