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प्रश्न
Give the symbol and valency of the following element and radical.
Magnesium
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उत्तर
| Element/Radical | Symbol | Valency |
| Magnesium | Mg | two |
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संबंधित प्रश्न
Name the scientist who first of all showed that atomic number of an element is a more fundamental property than its atomic mass.
From the standpoint of atomic structure, what determines which element will be the first and which the last in a period the periodic table?
How will the tendency to gain electrons change as we go from left to right across a period? Why?
Define the atomic size.
State what the group number in the Modern Periodic Table signifies. Give a reason why elements in the same group, have similar valency and similar chemical properties.
Find the odd one out and give its explanation.
The element with atomic number 14 is hard and forms acidic oxide and a covalent halide. To which of the following categories does the element belong?
Which of the following elements will form an acidic oxide?
Spot the error:
There are 5 periods and 17 groups in the modern periodic table.
Explain giving reason why although the nuclear charge in atoms increases in moving from left to right in a period as well as in moving from top to bottom in a group in the Modern periodic table, but the size of the atoms does not vary similarly in both situations.
