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प्रश्न
Define:
Periodic table
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उत्तर
The periodic table is a tabular arrangement of elements in horizontal rows, called periods, and vertical columns, called groups, to classify elements and facilitate their systematic study.
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संबंधित प्रश्न
Fill in the following blank with suitable word:
Group 17 elements are known as ...............
State how the valency of elements varies in a group of the periodic table?
What is the usual number of valence electrons and valency of group 18 elements of the periodic table?
What is the main characteristic of the last element in each period of the periodic table?
Noble gases belong to______ group of the periodic table.
______ group elements are called alkaline earth metals.
Explain the position of hydrogen in the periodic 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?
An element with atomic number ______ will form a basic oxide.
Answer the following in respect of element \[\ce{_16^32S}\].
Give its formula with hydrogen.
