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प्रश्न
The arrangement of elements in the Modern Periodic Table is based on their ______.
पर्याय
increasing atomic mass in the period
increasing atomic number in the horizontal rows
increasing atomic number in the vertical columns
increasing atomic mass in the group
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उत्तर
The arrangement of elements in the Modern Periodic Table is based on their increasing atomic number in the horizontal rows.
Explanation:
Elements in the Long Form of the Periodic Table are arranged sequentially by their increasing atomic numbers from left to right along the horizontal periods.
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संबंधित प्रश्न
Explain why, the noble gases are placed in a separate group.
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
On the basis of electronic configuration, how will you identify the first element of a period?
Name two elements in Inert gas.
In the Modern Periodic Table – atoms of all elements are arranged according to their increasing order of – atomic numbers. An atom of nitrogen has seven protons and seven electrons. State what would be its atomic number.
Give the symbol and valency of the following element and radical.
Chlorine [Chloride]
State what the group number in the Modern Periodic Table signifies. Give a reason why elements in the same group, have similar valency and similar chemical properties.
State whether true or false. If false, correct the statement.
Lanthanides and actinides are kept at the bottom of the periodic table because they resemble each other but they do not resemble with any other group elements.
The scientist who propounded the modern periodic law is ______.
The element with atomic number 14 is hard and forms acidic oxide and a covalent halide. To which of the following categories does the element belong?
