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 $2 p$ )
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
The major products $A$ and $B$ in the following reactions are
→The final product formed when ethyl bromide is treated with excess of alcoholic $KOH$ is
→Which of the following cannot be hydrolysed
Reductive amination of $A$ forms :
→$A$ :
An ideal gas is allowed to expand from $1\, L$ to $10\, L$ against a constant external pressure of $1\,bar$. The work done in $kJ$ is
→The major product formed in the reaction is
The correct nomenclature for the following compound is:
The correct order of second $I.E$ of $C, N, O$ and $F$ are in order
→Which element is not present in Nessler's reagent?
The pairs of bases in $DNA$ are held together by
→