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प्रश्न
Name the following:
The group of the Modern Periodic Table to which calcium [Ca2+] belongs.
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उत्तर
Group 2
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संबंधित प्रश्न
What is the name of those elements which divide metals and non-metals in the periodic table?
Explain why, the noble gases are placed in a separate group.
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)
Name the metals in the first twenty elements.
Arrange the elements of second and third periods in increasing order of their atomic size.
Third Period.
The electronic configuration of an element T is 2, 8, 8, 1.
What is the period number of T?
Give the symbol and valency of the following element and radical.
Oxygen [Oxide]
Give the symbol and valency of the following element and radical.
Ammonium
How does the property vary in periods and in groups?
Define groups of modern periodic table.
