| Mass number | Atomic number | Number of protons | Number of electrons | Number of neutrons | Electronic configuration | Number of valence electrons | ||||
| K | L | M | N | - | ||||||
| 12 | 6 | - | - | - | - | - | - | - | - | |
Answer:
Mass number
Atomic number
Number of protons
Number of electrons
Number of neutrons
Electronic configuration
Number of
valence electrons
K
L
M
N
-
12
6
6
6
6
2
4
-
-
4
40
20
20
20
20
2
8
8
2
2
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