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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
The modern periodic table was prepared by ______.
How does the chemical reactivity of alkali metals vary on going in group 1 of the periodic table?
What is the usual number of valence electrons in the atoms of the last element in a period?
Correct the statement.
Copper and zinc are representative elements.
Answer the following question.
Define the atomic size. Give its unit of measurement. In the modern periodic table what trend is observed in the atomic radius in a group and a period and why is it so?
Give the symbol and valency of the following element and radical.
Nitrate
Find the odd one out and give its explanation.
______ group elements are called alkaline earth metals.
An element belonging to 3d series of modern periodic table has spin magnetic moment = 5.92 B.M. in +3 oxidation state. The atomic number of elements are ______.
Name the following metal:
A metal present in period 3, group 1 of the periodic table.
