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प्रश्न
Give the trends in atomic size on moving across the period left to right.
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उत्तर
Atomic size decreases from left to right as the Atomic Number increases by one at each stage, with one proton added to the nucleus and one electron added to the valence shell. As nuclear attraction rises, the size of the atom decreases.
संबंधित प्रश्न
Arrange the following as per the instruction given in the bracket:
Mg, Cl, Na, S, Si (decreasing order of atomic size).
Which is greater in size Fe2+ or Fe3+?
Give reasons for the following:
The size of the anion is greater than the size of the parent atom.
Fill in the blanks.
Size of the atoms ______ from left to right across a period and ______ on descending in a group of normal elements.
Select the correct answer
Atomic radii of fluorine and neon in angstrom unit are
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 gives the correct increasing order of the atomic radii of O, F, and N?
Arrange the following elements in increasing order of their atomic radii.
- Li, Be, F, N
- Cl, At, Br I
Arrange the following as per instruction given in the bracket.
Mg, Cl, Na, S, Si (decreasing order of atomic size)
