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प्रश्न
An element A has 2 electrons in its fourth shell. State its electronic configuration.
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उत्तर
Its electronic configuration is 1s22s22p63s23p64s2.
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संबंधित प्रश्न
What is the usual number of valence electrons and valency of group 18 elements of the periodic table?
(b) What is the number of elements is 3rd period, the modern 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
Fill in the blank:
The horizontal rows in the periodic table are called _____________.
Write a short note.
Structure of the modern periodic table.
What are the elements.
Write an Explanation.
Period
Distinguish between:
s-block - p-block
State any five features of modern periodic table.
An element has 2 electrons in its N shell.
Is it a metal or a non-metal?
