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प्रश्न
______ forms the basis of the modern periodic table.
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उत्तर
Atomic number forms the basis of the modern periodic table.
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संबंधित प्रश्न
Consider the following elements:
Na, Ca, Al, K, Mg, Li
Which of these elements belong to the same period of the periodic table?
Give the group number of following elements present in periodic table
How will the tendency to gain electrons change as we go from left to right across a period? Why?
State the modern periodic law.
Give the symbol and valency of the following element and radical.
Sulphate
Write a scientific reason.
Lithium and sodium are included in the same group in the periodic table.
Choose an element from period 3 of modern periodic table that matches the description given below in instance. Give a reason for your choice.
It has a similar structure to diamond.
An element has the atomic number 12.
- Write the electric configuration.
- To which group and period does it belong.
A part of modern periodic table is given below. On its basis, answer the following questions:
| Group No. → | 1 | 2 | 13 | 14 | 15 | 16 | 17 | 18 |
| Period ↓ | ||||||||
| 2 | A | B | ||||||
| 3 | E | D | F | C |
Which of the element is a Metalloid?
An element belonging to 3d series of modern periodic table has spin magnetic moment = 5.92 B.M. in +3 oxidation state. The atomic number of elements are ______.
