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प्रश्न
While going from top to bottom in a group the atomic radius ______.
विकल्प
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.
Explanation:
When moving from top to bottom in a group, the atomic radius increases. This occurs because each subsequent element down the group has an additional electron shell, which increases the distance between the nucleus and the outermost electrons.
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संबंधित प्रश्न
Arrange the following as per the instruction given in the brackets:
Na, K, Li (Increasing atomic size)
Arrange the following as per the instruction given in the bracket:
Mg, Cl, Na, S, Si (decreasing order of atomic size).
Answer the following in respect of element `31/15 P `
Give its formula with chlorine?
Why is the size of neon greater than fluorine?
Fill in the blank:
On moving across a period from right to left in the periodic table, the atomic size of the atom ___________.
Give reason for the following:
Argon atom is bigger than chlorine atom.
Fill in the blank by selecting the correct word from the bracket.
If an element has seven electrons in its outermost shell then it is likely to have the _____ atomic size among all the elements in the same period.
The size of an atom is indicated by its ______.
_______ is the distance between the nucleus of the atom and its outermost shell.
Right or wrong sentence.
Moving from left to right, the size of the atom decreases.
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 ______
An element X has mass number 40 and contains 21 neutrons in its atom. To which group of the Periodic Table does it belong?
Which of the following is the correct order of size?
When an atom of iodine becomes an iodine ion (I–) the radius will ______
Which of the following are the characteristics of isotopes of an element?
- Isotopes of an element have same atomic masses
- Isotopes of an element have same atomic number
- Isotopes of an element show same physical properties
- Isotopes of an element show same chemical properties
Arrange the following elements in increasing order of their atomic radii.
- Li, Be, F, N
- Cl, At, Br I
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?
Arrange the following in order of increasing radii:
Mg2+, Mg, Mg+
Explain your choice.
This question refers to the elements of the Periodic Table with atomic numbers from 3 to 18. Some of the elements are shown by letters, but the letters are not the usual symbols of the elements.
| 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| A | B | C | D | E | F | G | H |
| 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 |
| I | J | K | L | M | N | O | P |
Which of these have least atomic size in period 3?
