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प्रश्न
Fill in the following blank with suitable word:
The basis for modern periodic table is ...............
उत्तर
The basis for the modern periodic table is the atomic number.
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संबंधित प्रश्न
How does the chemical reactivity of alkali metals vary on going in group 1 of the periodic table?
How does the chemical reactivity of the halogens vary on going in group 17 of the periodic table?
What happens to the number of valence electrons in the atoms of elements as we go down in a group of the periodic table?
State the term
The tabular arrangement of elements in horizontal rows and vertical columns _________
Arrange the elements of second and third periods in increasing order of their atomic size.
Third Period.
State the modern periodic law.
The horizontal rows in a periodic table are called _____.
To the left of the zig-zag line in the periodic table are the metal elements.
______ and ______ are called inner transition elements.
Answer the following in respect of element \[\ce{_16^32S}\].
Give its formula with hydrogen.
