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प्रश्न
Give the chemical formula of magnesium nitrate
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उत्तर
It denotes in a compound, the number of atoms of element present.
∴ Formula = \[\ce{Mg(NO3)2}\]
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संबंधित प्रश्न
Name two elements you would expect to show chemical reactions similar to magnesium. What is the basis for your choice?
Write the names given to the vertical columns and horizontal rows in the Modern Periodic Table. How does the metallic character of elements vary on moving down a vertical column? How does the size of atomic radius vary on moving left to right in a horizontal row? Give reason in support of your answer in the above two cases.
What is periodicity in properties of elements with reference to the Modern Periodic Table?
Explain why, the noble gases are placed in a separate group.
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.
(b) What is the number of elements is 3rd period, the modern periodic table?
Name the scientist who stated the modern periodic law.
Name the type of elements which have one electron short of octet.
Define the atomic size.
Give the chemical formula of ammonium sulphate
