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प्रश्न
State any five features of modern periodic table.
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उत्तर
- All the elements are arranged in the increasing order of their atomic number
- The horizontal rows are called periods. There are seven periods in the periodic table.
- The elements are placed in periods based on the number of shells in their atoms
- Vertical columns in the periodic table starting from top to bottom are called groups. There are 18 groups in the periodic table
- Based on the physical and chemical properties of elements, they are grouped into various families.
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संबंधित प्रश्न
Why do all the elements of the same group have similar properties?
The three elements having chemical symbols of Si, B and Ge are:
(a) all metals
(b) all non-metals
(c) all metalloids
(d) Si is metalloid, B is metal and Ge is non-metal
Write a short note.
Structure of the modern periodic table.
What is meant in the periodic table by a period?
Give the symbol and valency of the following element and radical.
Bicarbonate
Compare Modern Periodic Law with Mendeleev's Periodic Law.
______ and ______ are called inner transition elements.
The arrangement of elements in the Modern Periodic Table is based on their ______.
“Hydrogen occupies a unique position in Modern Periodic Table”. Justify the statement.
Explain the position of hydrogen in the periodic table.
