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प्रश्न
Give the symbol and valency of the following element and radical.
Aluminium
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उत्तर
| Element/Radical | Symbol | Valency |
| Aluminium | Al | three |
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संबंधित प्रश्न
The modern periodic table was prepared by ______.
(b) What is the number of elements is 3rd period, the modern periodic table?
What is a group in the periodic table?
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.
What do you understand by typical elements?
Position of A, B and C three elements is given in the table from the modern periodic table. Answer the following questions.
| Periods | Group 2 | Group 17 |
| 2 | ----- | A |
| 3 | B | ----- |
| 4 | ----- | C |
- What is an element metal or nonmetal?
- Which is the outermost orbit of element B?
- Identify C element and it's physical state.
______ is the longest period in the periodical table.
Noble gases are placed in the ______ group in the modern periodic table.
Explain the position of hydrogen in the periodic table.
An element ‘M' has 50% of the electrons filled in the 3rd shell as in the 2nd shell. The atomic number of ‘M’ is ______.
