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Question
The following questions refer to the Periodic Table.
What happens to the atomic size of elements moving from top to bottom of a group?
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Solution
Atomic size increases on moving from top to bottom of a group.
RELATED QUESTIONS
Arrange the following as per the instruction given in the bracket:
Mg, Cl, Na, S, Si (decreasing order of atomic size).
Arrange the elements of second and third periods in increasing order of their atomic size (excluding noble gases).
Write the name and symbol of the element from the description.
The noble gas with the smallest atomic radius.
On moving from left to right in a periodic table, the size of the atom ______.
While going from top to bottom in a group the 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 |
Write information about the given atomic numbers in the table.
| Atomic Number | Electronic configuration | Group | Period | Element |
| 10 | ||||
| 20 | ||||
| 7 |
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
Atomic number of a few elements are given below
10, 20, 7, 14
- Identify the elements
- Identify the Group number of these elements in the Periodic Table
- Identify the Periods of these elements in the Periodic Table
- What would be the electronic configuration for each of these elements?
- Determine the valency of these elements
Give reason for the following:
The size of a Cl− ion is greater than the size of a Cl atom.
