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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
Which of the following statement is correct in regard to the classification of elements?
(a) Elements in modern periodic table are arranged on the basis of increasing atomic masses.
(b) Elements in Mendeleev's periodic table are arranged on the basis of increasing atomic numbers.
(c) In modern periodic table, the element nickel of lower atomic mass is kept before the element cobalt of higher atomic mass.
(d) In modern periodic table, the isotopes of chlorine having different atomic masses are kept in the same group.
What is the number of elements is 1st period the modern periodic table?
How many groups and periods does the modern periodic table have?
Give the chemical formula of magnesium nitrate
Give the chemical formula of ammonium sulphate
An X element with atomic number 11 and Y element with atomic number 13 belongs to the third period in the modern periodic table. With this information, give the answers of the below questions.
- Which element has more metallic character from these two elements?
- What is the valency of each X and Y elements?
- Atom size of Y element is smaller than atom size of X element. Explain.
An element which is an essential constituent of all organic compounds belongs to
Which of the following is the outermost shell for elements of period 2?
Explain the position of hydrogen in the periodic table.
Name the following metal:
A metal present in period 3, group 1 of the periodic table.
