Which of the following order is incorrect?

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) $1$. Lewis basic character: The basicity depends on the availability of the lone pair on the central atom. As the size of the central atom increas

Vedclass · Accepted Answer

Bond angle : $CH_4 > SiH_4 > GeH_4 > SnH_4$

Vedclass · Answer

(D) $1$. Lewis basic character: The basicity depends on the availability of the lone pair on the central atom. As the size of the central atom increases from $N$ to $Sb$,the lone pair occupies a larger orbital,making it less available for donation. Thus,$NH_3 > PH_3 > AsH_3 > SbH_3$ is correct.$2$. Bond dissociation energy: As the size of the halogen atom increases from $F$ to $I$,the bond length increases and bond strength decreases. Thus,$HF > HCl > HBr > HI$ is correct.$3$. Thermal stability: As the size of the central atom increases down the group,the $M-H$ bond length increases,leading to a decrease in bond strength and thermal stability. Thus,$H_2O > H_2S > H_2Se > H_2Te$ is correct.$4$. Bond angle: In $CH_4$,the bond angle is $109.5^{\circ}$. As the electronegativity of the central atom decreases down the group $(C > Si > Ge > Sn)$,the bond pair electrons move further away from the central atom,causing the bond angle to decrease. However,the trend $CH_4 > SiH_4 > GeH_4 > SnH_4$ is generally observed due to the decrease in electronegativity and increase in size. Wait,all these options are actually correct based on standard chemical trends. Re-evaluating: Actually,the bond angle in $CH_4$ is $109.5^{\circ}$,and for the others,it approaches $90^{\circ}$ as the central atom size increases. The provided options are all correct. If forced to choose an 'incorrect' one,there might be a typo in the question source. Given the standard curriculum,all these trends are correct.

Similar Questions

The oxidation number of phosphorus varies from

In the nitrogen group,as we move from $N$ to $Sb$,the $H-M-H$ bond angle in the hydrides approaches $90^o$ because ......

Pure $HNO_3$ is colorless. However,it turns slightly brown when exposed to light due to its decomposition into $.....$.

The set that represents the pair of neutral oxides of nitrogen is :

Which one of the following is correct with respect to basic character?

Vedclass Test Series

Exam Paper Generator

Online Exam Module