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प्रश्न
While going from top to bottom in a group the atomic radius _______.
पर्याय
increases
decreases
remains same
No change occurs
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उत्तर
While going from top to bottom in a group the atomic radius increases.
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संबंधित प्रश्न
Arrange the following as per the instruction given in the bracket:
Mg, Cl, Na, S, Si (decreasing order of atomic size).
What do you understand by atomic size? State its unit?
Give reasons for the following:
The size of the anion is greater than the size of the parent atom.
Give scientific reasons for the following:
Atomic radius goes on decreasing while going from left to right in a period.
Write scientific reason.
Atomic radius goes on increasing down a group.
With reference to the variation of properties in the Periodic Table, which of the following is generally true?
Atomic size increases from left to right across a period.
On moving from left to right in a periodic table, the size of the atom _______.
The size of an atom is indicated by its _______.
Moving from left to right, the size of the atom decreases.
The size of an atom depends on the number of valence electrons.
Write an Explanation.
Atomic radius
Some elements and their atomic radii are given here. Arrange them in decreasing order of their atomic radii. Identify which of the above elements is the biggest atom and which is smallest?
| Element | K | Na | Rb | Cs | Li |
| Atomic radius (pm) | 231 | 186 | 244 | 262 | 151 |
Carbon belongs to the second period and Group 14. Silicon belongs to the third period and Group 14. If the atomic number of carbon is 6, the atomic number of silicon is ______
Which of the following is the correct order of size?
When an atom of iodine becomes an iodine ion (I–) the radius will ______
- Electropositive nature of the element(s) increases down the group and decreases across the period
- Electronegativity of the element decreases down the group and increases across the period
- Atomic size increases down the group and decreases across a period (left to right)
- Metallic character increases down the group and decreases across a period.
On the basis of the above trends of the Periodic Table, answer the following about the elements with atomic numbers 3 to 9.
- Name the most electropositive element among them
- Name the most electronegative element
- Name the element with smallest atomic size
- Name the element which is a metalloid
- Name the element which shows maximum valency.
Arrange the following as per the instruction given in the bracket:
Carbon, Fluorine, Beryllium (decreasing order of atomic size).
Arrange the following as per instruction given in the bracket.
Mg, Cl, Na, S, Si (decreasing order of atomic size)
