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प्रश्न
Give the symbol and valency of the following element and radical.
Sodium
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उत्तर
| Element/Radical | Symbol | Valency |
| Sodium | Na | one |
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संबंधित प्रश्न
In the Modern Periodic Table, which are the metals among the first ten elements?
The atomic particle whose number in the atoms of an element always remains the same and which forms the real basis for the modern classification of elements is:
(a) electron
(b) proton
(c) neutron
(d) meson
Consider the following elements:
20Ca, 8O, 18Ar, 16S, 4Be, 2He
Which of the above elements would you expect to be:
(i) very stable?
(ii) in group 2 of the periodic table?
(iii) in group 16 of the periodic table?
Correct the statement.
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Write a short note.
Structure of the modern periodic table.
Write a short note.
Position of isotopes in the Mendeleev’s and the modern periodic table.
Give the symbol and valency of the following element and radical.
Bisulphate
State the number of elements in Period 2 of the Periodic Table.
______ and ______ are called inner transition elements.
Which of the following elements does not lose an electron easily?
