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प्रश्न
How were elements arranged in the long form of the periodic table or the Modern Periodic Table?
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उत्तर
Long-form of periodic table elements were arranged in increasing order of atomic number.
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संबंधित प्रश्न
Nitrogen (atomic number 7) and phosphorus (atomic number 15) belong to group 15 of the Periodic Table. Write the electronic configuration of these two elements. Which of these will be more electronegative? Why?
Fill in the following blank with suitable word:
Group 17 elements are known as ...............
How many periods and groups are there in the long form of periodic table?
An element X belongs to 3rd period and group 2 of the periodic table. State:
(a) number of valence electrons
(b) valency
(c) metal or non-metal
(d) name of the element
Answer the following in respect of element `31/15 P`
Give its electronic configuration
Right or wrong sentence.
To the left of the zig-zag line in the periodic table are the metal elements.
In the modern periodic table, elements are arranged according to their ______
Name the non-metals in the first twenty elements.
Answer the following in respect of element \[\ce{_16^32S}\].
Give its electronic configuration.
Match the atomic number with the following:
A rare gas.
