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प्रश्न
Give the chemical formula of calcium phosphate
उत्तर
It denotes in a compound, the number of atoms of element present.
∴ Formula = \[\ce{Ca(PO4)2}\]
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संबंधित प्रश्न
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 the significance of atomic number in the modern classification of elements? Explain with the help of an example.
What are the merits of the modern periodic table of elements?
Which of the following are the correct characteristics of isotopes of an element?
(i) same atomic mass
(ii) same atomic number
(iii) same physical properties
(iv) same chemical properties
(a) (i), (ii) and (iv)
(b) (ii), (iii) and (iv)
(c) (ii) and (iii)
(d) (ii) and (iv)
How many groups and periods does the modern periodic table have?
Name two elements in Alkali metals.
State the modern periodic law.
What is meant in the periodic table by a period?
Which of the given elements A, B, C, D and E with atomic number 2, 3, 7, 10 and 30 respectively belong to the same period?
An element ‘M' has 50% of the electrons filled in the 3rd shell as in the 2nd shell. The atomic number of ‘M’ is ______.
