Advertisements
Advertisements
प्रश्न
How were elements arranged in the long form of the periodic table or the Modern Periodic Table?
Advertisements
उत्तर
Long-form of periodic table elements were arranged in increasing order of atomic number.
APPEARS IN
संबंधित प्रश्न
Write the names given to the vertical columns and horizontal rows in the Modern Periodic Table. How does the metallic character of elements vary on moving down a vertical column? How does the size of atomic radius vary on moving left to right in a horizontal row? Give reason in support of your answer in the above two cases.
Name the scientist who first of all showed that atomic number of an element is a more fundamental property than its atomic mass.
(b) What is the number of elements is 3rd period, the modern periodic table?
The horizontal rows in a periodic table are called _____.
Give the symbol and valency of the following element and radical.
Potassium
Give the symbol and valency of the following element and radical.
Bisulphite
Distinguish between:
s-block - p-block
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.
An element which is an essential constituent of all organic compounds belongs to
An element has 2 electrons in its N shell.
Is it a metal or a non-metal?
