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प्रश्न
State whether true or false. If false, correct the statement.
Lanthanides and actinides are kept at the bottom of the periodic table because they resemble each other but they do not resemble with any other group elements.
विकल्प
True
False
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उत्तर
Lanthanides and actinides are kept at the bottom of the periodic table because they resemble each other but they do not resemble with any other group elements- True
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संबंधित प्रश्न
State whether the following statement is true or false:
On going down in a group of the periodic table, the number of valence electrons increases.
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Define the atomic size.
Give the symbol and valency of the following element and radical.
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Give the symbol and valency of the following element and radical.
Ammonium
Give the chemical formula of carbonic acid
______ is the longest period in the periodical table.
______ forms the basis of the modern 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 |
Write the molecular formula of the compound formed by the combination:
A and F
Match the atomic number with the following:
An element of group 2.
