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प्रश्न
Name the scientist who stated the modern periodic law.
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उत्तर
Henry Moseley stated the modern periodic law.
संबंधित प्रश्न
Fill in the following blank with suitable word:
Group 1 elements are called ...............
What is the usual number of valence electrons in the atoms of the last element in a period?
What happens to the number of valence electrons in the atoms of elements as we go down in a group of the 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
State its position in the periodic table?
How many periods and groups are there in the modern periodic table?
State the number of elements in Period 3 of the Periodic Table.
Compare Modern Periodic Law with Mendeleev's Periodic Law.
The d-block elements are called as _______ elements.
Which of the following elements would lose an electron easily?
