The number of protons, neutrons and orbital electrons in particles A to D are given in the following table
Particle
Protons
Neutrons
Electrons
A
3
4
2
B
9
10
10
C
17
18
17
D
17
20
17
What will be the formula of compound formed by A and B only?
Important Questions on Atomic Structure
Chlorine is an element with atomic number 17. It has two isotopes having mass numbers 35 and 37.
What is meant by the term atomic number?
Write down the electronic configuration of the chlorine atom.
Chlorine is an element with atomic number 17. It has two isotopes having mass numbers 35 and 37.
Complete the following table.
|
Isotope |
No.of electrons | No.of protons | No.of neutrons |
| 17 | - | 18 | |
| 17 | 17 | - |
Choose from the table letters (A to E) that represent a pair of isotope
| Element | Neutron | Proton | Electron |
| A | 22 | 18 | 18 |
| B | 18 | 17 | 17 |
| C | 10 | 9 | 9 |
| D | 7 | 7 | 7 |
| E | 20 | 17 | 17 |
Choose from the table letters (A to E) that represent
an element with mass number 19
|
Element |
Neutron |
Proton |
Electron |
|
A |
22 |
18 |
18 |
|
B |
18 |
17 |
17 |
|
C |
10 |
9 |
9 |
|
D |
7 |
7 |
7 |
|
E |
20 |
17 |
17 |
Choose from the table letters (A to E) that represent
an element having mass number 37
|
Element |
Neutron |
Proton |
Electron |
|
A |
22 |
18 |
18 |
|
B |
18 |
17 |
17 |
|
C |
10 |
9 |
9 |
|
D |
7 |
7 |
7 |
|
E |
20 |
17 |
17 |
