Chemistry
The electronic arrangements of six atoms, A to F is shown below.
A: 2,5 B: 2 C: 2,6 D: 2,8,6 E: 2,8,8 F: 2,8,3
The atoms from the same group of the periodic table:
- D & E
- C & D
- E & F
- C & E
Periodic Table
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Answer
C & D
Reason — The electronic configuration of six atoms is given below :
| Atom | Electronic configuration | Valence electrons |
|---|---|---|
| A | 2, 5 | 5 |
| B | 2 | 2 |
| C | 2, 6 | 6 |
| D | 2, 8, 6 | 6 |
| E | 2, 8, 8 | 8 |
| F | 2, 8, 3 | 3 |
Atom C (2,6) and D (2,8,6) both have 6 valence electrons. So, they both belong to Group 16.
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