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प्रश्न
Name or state following with reference to the element of the first three periods of the periodic table.
A metal in period 3 having valency 3.
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उत्तर
Metal in period 3 is A1 [Aluminium]
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संबंधित प्रश्न
Write the number of vertical columns in the modern periodic table. What are these columns called?
Define the term : Atomic size
An element 'X' (Atomic number – 20) burns in the presence of oxygen to form a basic oxide.
(a) Identify the element and write its electronic configuration.
(b) State its group number and period number in the Modern Periodic Table.
(c) Write a balanced chemical equation for the reaction when this oxide is dissolved in water.
Calculate the valency of element X whose atomic number is 9.
How many groups and periods are there in the modern periodic table?
The following questions refer to the Periodic Table.
Name the first and last element in period 2.
Give the number of the group and the period of elements having three shells with three electrons in valence shell.
Name and state the following with reference to the elements of the first three periods of the periodic table.
Metalloid in Period 3.
Name the period which is the shortest period of the periodic table.
Electron Affinity is maximum in ______.
