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प्रश्न
Correct the statement.
Copper and zinc are representative elements.
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उत्तर
Copper and zinc are transition elements.
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संबंधित प्रश्न
Name the scientist who prepared modern periodic table.
State how the valency of elements varies in a group of the periodic table?
What is the fundamental difference in the electron configurations between the group 1 and group 2 elements?
In what respects do the properties of group 1 elements differ from those of group 17 elements? Explain with examples by taking one element from each group.
How many periods and groups are there in the modern periodic table?
Define the atomic size.
Give the symbol and valency of the following element and radical.
Nitrate
The modern periodic table shows the molecular masses of the elements in each frame.
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?
Name the metalloids in the first twenty elements.
