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प्रश्न
Write the name and symbol of the element from the description.
The noble gas with the smallest atomic radius.
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उत्तर
Name: Helium
Symbol: He
संबंधित प्रश्न
Answer the following in respect of element `31/15 P`
Give its electronic configuration
Why is the size of sodium is greater than magnesium?
Which is greater in size an atom or an anion?
Which is greater in size Fe2+ or Fe3+?
Give reason for the following:
Argon atom is bigger than chlorine atom.
Write the name and symbol of the element from the description.
The atom having the smallest atomic mass.
Give scientific reasons for the following:
Atomic radius goes on decreasing while going from left to right in a period.
What happens to the atomic size of elements on moving from left to right in a period?
The following questions refer to the Periodic Table.
What happens to the atomic size of elements moving from top to bottom of a group?
Arrange the following as per the instruction given in the bracket
Na, K, Li (Increasing atomic size)
The changes in the properties of elements on moving from left to right across a period of the Periodic Table. For the property, choose the correct answer.
The atomic size:
On moving from left to right in a periodic table, the size of the atom _______.
Write information about the given atomic numbers in the table. 10, 20, 7.
| Atomic Number | Electronic configuration | Group | Period | Element |
| 10 | ||||
| 20 | ||||
| 7 |
Which of the following is the correct order of atomic size?
Which of the following is the correct order of atomic size?
Which one of the following depict the correct representation of atomic radius(r) of an atom?
|
(i) |
(ii) |
|
(iii) |
(iv) |
Elements have been arranged in the following sequence on the basis of their increasing atomic masses.
| F, | Na, | Mg, | Al, | Si, | P, | S, | Cl, | Ar, | K |
- Pick two sets of elements which have similar properties.
- The given sequence represents which law of classification of elements?
Write the formula of the product formed when the element A (atomic number 19) combines with the element B (atomic number 17). Draw its electronic dot structure. What is the nature of the bond formed?
- In below ladder symbols of elements are jumbled up. Rearrange these symbols of elements in the increasing order of their atomic number in the Periodic Table.
- Arrange them in the order of their group also.
