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प्रश्न
State modern periodic law.
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उत्तर
It states that "The physical and chemical properties of the elements are a periodic function of their atomic numbers." According to this law, if we arrange the elements based on their increasing atomic numbers, we find that the elements with similar physical and chemical behaviour will be grouped together after a certain interval of elements.
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संबंधित प्रश्न
Fill in the following blank with suitable word:
The basis for modern periodic table is ...............
How does the chemical reactivity of alkali metals vary on going in group 1 of the periodic table?
On the basis of electronic configuration, how will you identify chemically similar elements?
Give the symbol and valency of the following element and radical.
Bicarbonate
Give the symbol and valency of the following element and radical.
Bisulphate
Give the symbol and valency of the following element and radical.
Hydroxide
The groups 1 and 2 constitute the _______ block.
The elements A, B, C, D and E have atomic number 9, 11, 17, 12 and 13 respectively. Which pair of elements belong to the same group?
Which one of the following elements exhibit maximum number of valence electrons?
Spot the error:
The elements of group 13 are called the carbon family.
