MCQ
Among the following elements, the one having the highest ionisation energy is :-
- A$(Ne) 3s^2 3p^1$
- B$(Ne) 3s^2 3p^4$
- ✓$(Ne) 3s^2p^3$
- D$(Ar) 3d^{10} 4s^2 4p^2$
✓
Answer
Correct option: C.
$(Ne) 3s^2p^3$
c
The IE increases along a period and decreases down the group. Also, IE of 15 is more than group 16 as group 15 has half-filled p subshell giving extra stability.
Thus among given option highest IE is of option B i.e. $[N e] 3 s^{2} 3 p^{3}$.
The IE increases along a period and decreases down the group. Also, IE of 15 is more than group 16 as group 15 has half-filled p subshell giving extra stability.
Thus among given option highest IE is of option B i.e. $[N e] 3 s^{2} 3 p^{3}$.
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 functional isomer of ethyl alcohol is
$X$ , $Y$ & $Z$ are elements of same period & also belongs to $p-$ block elements. $Y$ has positive value of $\Delta\ Heg$ & $'Z'$ has highest value of $2^{nd} I.E$ among them. Then correct order of their atomic number is
→$(a)$ $X < Y < Z$ $(b) X < Z < Y$
$(c) Y < Z < X$ $(d) Z < Y < X$
Largest in size out of $Na^+ , Ne$ and $F^-$ is
→Which of the following is true for given reaction $R - H + {X_2}\xrightarrow{{hv}}R - X + H - X$
→Which of the following order of resonance energy is correct ?
In the following compounds
The order of acidity is
Which of the following order is correct for the property mentioned in brackets?
Identify the correct statement for the below given transformation.
The paramagnetic nature of oxygen molecule is best explained on the basis of
The silicates which contain $Si_2O_7^{-6}$ units are called
→