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प्रश्न
What are the advantages of the periodic table?
उत्तर
Advantages of the periodic table:
(i) The study of elements and its properties is made easy.
(ii) By knowing the position of the element in the periodic table, prediction of the type of compounds that the elements form becomes easy.
(iii) The study of chemistry has been made easy in schools and colleges by using the periodic table chart as a teaching-aid.
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संबंधित प्रश्न
What is periodicity in properties of elements with reference to the Modern Periodic Table?
What are the groups in a periodic table? Give two characteristics of each.
What are horizontal rows and vertical columns in a periodic table known as?
Give the symbol and valency of the following element and radical.
Magnesium
Give the chemical formula of sodium nitrate
The d-block elements are called as _______ elements.
Write an Explanation.
Period
An X element with atomic number 11 and Y element with atomic number 13 belongs to the third period in the modern periodic table. With this information, give the answers of the below questions.
- Which element has more metallic character from these two elements?
- What is the valency of each X and Y elements?
- Atom size of Y element is smaller than atom size of X element. Explain.
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?
Answer the following in respect of element \[\ce{_16^32S}\].
To which group and period does it belong?
