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प्रश्न
State what is meant by the term chemical formula.
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उत्तर
Chemical formula is the representation of a substance by means of symbols.
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संबंधित प्रश्न
Fill in the following blank with suitable word:
The basis for modern periodic table is ...............
Fill in the following blank with suitable word:
Group 17 elements are known as ...............
Is it possible to have an element having atomic number 1.5 placed between hydrogen and helium?
Name two elements in each case: Lanthanides
Write an Explanation.
Period
Write scientific reason.
Lithium and sodium are included in the same group in periodic table.
Which of the following elements would lose an electron easily?
Spot the error:
The elements of group 13 are called the carbon family.
An element ‘M' has 50% of the electrons filled in the 3rd shell as in the 2nd shell. The atomic number of ‘M’ is ______.
Match the atomic number with the following:
An element of group 2.
