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प्रश्न
Name the type of elements which have two outermost shell incomplete.
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उत्तर
Transition elements
संबंधित प्रश्न
What is periodicity in properties of elements with reference to the Modern Periodic Table?
On which side of the periodic table will you find non-metals?
Is it possible to have an element having atomic number 1.5 placed between hydrogen and helium?
Name the scientist who stated the modern periodic law.
How many groups and periods does the modern periodic table have?
The modern periodic table has 1 to 7 periods.
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 A element metal or nonmetal?
- Which is the outermost orbit of element B?
- Identify C element and it's physical state.
Which of the following is the outermost shell for elements of period 2?
An element has the atomic number 12.
- Write the electric configuration.
- To which group and period does it belong.
Give the criteria on the basis of which elements are placed (i) in a group and (ii) in a period in the modern periodic table. The atomic number of an element is 16. According to the criteria, in which group and period it should be placed?
