Advertisements
Advertisements
प्रश्न
Complete the table below by identifying A, B, C, D, E and F.
Advertisements
उत्तर
| Element | Symbol | Number of protons |
Numbers of neutrons |
Number if electrons |
| Fluorine | `""_9F""^19` | 9 | `A` | `B` |
| Aluminium | `C` | `D` | `14` | `13` |
| Postassium | `""_19K""^39` | `E` | `F` | `19` |
ans
| Element | Symbol | Number of protons | Number of neutrons | Numbers if electrons |
| Fluorine | `""_9F""^19` | 9 | 10 | 9 |
| Aluminium | `""_13Al""^27` | 13 | 14 | 13 |
| Potassium | `""_19K""^39` | 19 | 20 | 19 |
APPEARS IN
संबंधित प्रश्न
Multiple Choice Questions
The number of electrons in an atom is equal to number of
Draw the diagrams representing the atomic structures of the following: Nitrogen.
How does the existence of isotopes contradict Dalton’s atomic theory?
FILL IN THE BLANK
The protons and neutrons are held firmly in the nucleus by strong .........................
WRITE SHORT ANSWER
What is the central part of an atom known as?
ANSWER IN DETAIL
How are radioactive radiations useful in medicines ?
Which part of atom was discovered by Rutherford?
Where is the nucleus of an atom situated?
‘Electrons revolve around the nucleus in fixed orbits or shells called energy levels’. State how these energy levels are represented.
Differentiate between the following term:
Nucleus and nucleons
