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प्रश्न
Name an alkali metal in period 3 and halogen in period 2.
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उत्तर १
SOL: Na and F
उत्तर २
Period III alkali metal is sodium. Fluorine is a halogen found in period II.
संबंधित प्रश्न
where should hydrogen be placed in the modern periodic table? Give reason for your answer.
Which element has the electronic configuration 2, 8, 2?
On the basis of electronic configuration, how will you identify chemically similar elements?
(b) What is the number of elements is 3rd period, the modern periodic table?
The electronic configuration of an element T is 2, 8, 8, 1.
What is the group number of T?
Write scientific reason.
Lithium and sodium are included in the same group in periodic table.
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.
If an element X is placed in group 14, what will be the formula and the nature of bonding of its chloride?
Arrange the following elements in the increasing order of their metallic character
| Mg, | Ca, | K, | Ge, | Ga |
An element with atomic number ______ will form a basic oxide.
