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प्रश्न
What is meant by a period, in a periodic table?
उत्तर
A period is a horizontal row of elements in a periodic table.
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संबंधित प्रश्न
Fill in the following blank with suitable word:
Group 1 elements are called ...............
What is the number of valence electrons in the atoms of first elements in a period?
What are the advantages of the periodic table?
An element E has following electronic configuration:
|
K |
L |
M |
|
2 |
8 |
6 |
(a) To which group of the periodic table does element E belong?
(b) To which period of the periodic table does element E belong?
(c) State the number of valence electrons present in element E.
(d) State the valency of the element E.
How many periods and groups are there in the modern periodic table?
The modern periodic table has 1 to 7 periods.
Noble gases belong to______ group of the periodic table.
What are groups and periods in the modern periodic table?
Choose an element from period 3 of modern periodic table that matches the description given below in instance. Give a reason for your choice.
It has same valency as Lithium.
An element with atomic number ______ will form a basic oxide.
