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प्रश्न
What are horizontal rows and vertical columns in a periodic table known as?
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उत्तर
The horizontal rows are known as periods and vertical columns in the periodic table are known as groups.
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संबंधित प्रश्न
What is the number of elements is 1st period the modern periodic table?
Name two elements in Alkali metals.
Fill in the blank:
The horizontal rows in the periodic table are called _____________.
Name an element of group 18 which can form compounds.
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?
Give the symbol and valency of the following element and radical.
Oxygen [Oxide]
State what the group number in the Modern Periodic Table signifies. Give a reason why elements in the same group, have similar valency and similar chemical properties.
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.
The longest period of the Modern Periodic Table is period.
An element X which is a yellow solid at room temperature shows catenation and allotropy. X forms two oxides which are also formed during the thermal decomposition of ferrous sulphate crystals and are the major air pollutants.
- Identify the element X
- Write the electronic configuration of X
- Write the balanced chemical equation for the thermal decomposition of ferrous sulphate crystals?
- What would be the nature (acidic/ basic) of oxides formed?
- Locate the position of the element in the Modern Periodic Table.
