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प्रश्न
Give the symbol and valency of the following element and radical.
Hydrogen
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उत्तर
| Element/Radical | Symbol | Valency |
| Hydrogen | H | one |
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संबंधित प्रश्न
Fill in the blank:
The modern periodic table consists of ……………. periods.
What is periodicity in properties of elements with reference to the Modern Periodic Table?
What is the fundamental difference in the electron configurations between the group 1 and group 2 elements?
On the basis of electronic configuration, how will you identify the first element of a period?
Answer the following question.
How it can be proved that the basic structure of the Modern Periodic Table is based on the electronic configuration of atoms of different elements?
State the number of elements in Period 2 of the Periodic Table.
Distinguish between:
Group 17 - Group 18
______ is the longest period in the periodical table.
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 Noble gas?
Name the following metal:
A metal present in period 3, group 1 of the periodic table.
