MCQ
Which among the following elements has the highest first ionization enthalpy?
- ✓Nitrogen
- BBoron
- CCarbon
- DOxygen
✓
Answer
Correct option: A.
Nitrogen
a
Due to stable $2s^2\, 2p^3$ configuration. (half filled $p-$ orbital) Nitrogen atom has highest energy.
Due to stable $2s^2\, 2p^3$ configuration. (half filled $p-$ orbital) Nitrogen atom has highest energy.
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
$5$ -Bromo- $2 $ -cyclopropyl cyclohex- $2$ -enol have correct structure is
→Consider the above chemical reaction. The total number of stereoisomers possible for product $'\mathrm{P}^{\prime}$ is $.....$
→Arrange the following in decreasing order of reactivity towards $EAS$ (electrophilic aromatic substitution)
→In the presence of peroxide, hydrogen chloride and hydrogen iodide do not give anti-Markovnikoff’s addition to alkenes because
A homogeneous ideal gaseous reaction $AB _{2( g )} \rightleftharpoons A _{( g )}+2 B _{( g )}$ is carried out in a $25\, litre$ flask at $27^{\circ} C$. The initial amount of $AB _{2}$ was $1\, mole$ and the equilibrium pressure was $1.9 \,atm.$ The value of $K _{ P }$ is $x \times 10^{-2}$. The value of $x$ is $....\,.$ (Integer answer)
→Which of the following salts when dissolved in water will get hydrolysed
In molecules of the type $AX_2L_n$ (where $L$ represents lone pairs and $n$ is its number) there exists a bond between element $A$ and $X.$ The $\angle X A X$ bond angle
→Correct order of basicity of various nitrogen in $LSD$ is
→The mass of $112\;c{m^3}$ of $C{H_4}$ gas at $STP$ is ............. $\mathrm{g}$
→The $ pH$ of a soft drink is $3.82$. Its hydrogen ion concentration will be
→