MCQ
All element in $3$$^{rd}$ period have
- AAn atomic number $3$
- B$3$ complete sub-shells
- ✓Valence electrons shell
- D$3$ electrons less than the octet
✓
Answer
Correct option: C.
Valence electrons shell
c
All elements in $3^{rd}$ period have $3$ completely filled subshells (i.e $1 s , 2 s$ and $2 p$ )
All elements in $3^{rd}$ period have $3$ completely filled subshells (i.e $1 s , 2 s$ and $2 p$ )
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