Advertisements
Advertisements
प्रश्न
Write information about the given atomic numbers in the table. 10, 20, 7.
| Atomic Number | Electronic configuration | Group | Period | Element |
| 10 | ||||
| 20 | ||||
| 7 |
Advertisements
उत्तर
| Atomic Number | Electronic configuration | Group | Period | Element |
| 10 | 2, 8 | 18 | 2 | Neon (Ne) |
| 20 | 2, 8, 8, 2 | 2 | 4 | Calcium (Ca) |
| 7 | 2, 5 | 15 | 2 | Nitrogen (N) |
APPEARS IN
संबंधित प्रश्न
Answer the following in respect of element `31/15 P`
Give its electronic configuration
Answer the following in respect of element `31/15 P `
Is it a reducing agent or oxidizing agent?
Answer the following in respect of element `31/15 P `
Give its formula with chlorine?
Arrange the elements of second and third periods in increasing order of their atomic size (excluding noble gases).
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.
Supply the missing word from those in the brackets:
If an element has seven electrons in its outermost shell then it is likely to have the ______ (largest/ smallest) atomic size among all the elements in the same period.
Arrange the following as per the instruction given in the bracket.
Mg, Cl, Na, S, Si (increasing order of atomic size)
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.
_______ is the distance between the nucleus of the atom and its outermost shell.
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 |
- In below ladder symbols of elements are jumbled up. Rearrange these symbols of elements in the increasing order of their atomic number in the Periodic Table.
- Arrange them in the order of their group also.
An element with the largest atomic radius among the following is ______.
Arrange the following as per instruction given in the bracket.
Mg, Cl, Na, S, Si (decreasing order of atomic size)
Arrange the following in order of increasing radii:
Cl−, Cl
Explain your choice.
Arrange the following in order of increasing radii:
N, O, P
Explain your choice.
Which one has the largest size?
Give reason for the following:
The size of a Cl− ion is greater than the size of a Cl atom.
