Advertisements
Advertisements
प्रश्न
The metals of Group 2 from top to bottom are Be, Mg, Ca, Sr and Ba.
- Which one of these elements will form ions most readily and why?
- State the common feature in their electronic configuration.
Advertisements
उत्तर
- Ba metal will form ions readily because the ionisation energy decreases down the group as the size increases.
- On moving down the group, the number of electrons in the outermost shell, i.e. valence electrons, remains the same. So, the valency in the group remains the same.
APPEARS IN
संबंधित प्रश्न
Arrange the following as per the instruction given in the brackets:
Na, K, Li (Increasing atomic size)
Which is greater in size Fe2+ or Fe3+?
Give reason for the following:
Argon atom is bigger than chlorine atom.
What happens to the atomic size of elements on moving from left to right in a period?
The size of an atom is indicated by its ______.
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 is the correct order of atomic size?
Which of the following is the correct order of size?
Which of the following is the correct order of atomic size?
