MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Hydrides of Group 16

Assertion A: ...

Question

Assertion (A): Thermal stability of the hydrides of VIA group elements decreases from $H_{2} O$ to $H_{2} P o$ .
Reason(R): Increase in M-H bond length and a decrease in bond energy.

Read the above assertion and reason and choose the correct option regarding it.

A

Both Assertion and Reason are true and Reason is the correct explanation of Assertion

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

B

Both Assertion and Reason are true and Reason is not the correct explanation of Assertion

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C

Assertion is true but Reason is false.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

D

Assertion is false but Reason is true.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A Both Assertion and Reason are true and Reason is the correct explanation of Assertion
$B o n d l e n g t h \propto T h e r m a l s t a b i l i t y \propto \frac{1}{m o l e c u l a r m a s s} \propto \frac{1}{b o n d l e n g t h}$
Thus bond length decreases as thermal stability increases.
Thus thermal stability order-
$H_{2} O > H_{2} S > H_{2} S e > H_{2} T e > H_{2} P o$

Suggest Corrections

thumbs-up

0

Similar questions

Q. Read the assertion and reason carefully to mark the correct option out of the options given below:
(a) If both assertion and reason are true and the reason is the correct explanation of the assertion.
(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.
(c) If assertion is true but reason is false.
(d) If assertion and reason both are false.

Assertion : HOF bond angle is greater than HOCl bond angle.
Reason : Oxygen is more electronegative than halogens

Q. Read the assertion and reason carefully to mark the correct option out of the options given below:

(a) If both assertion and reason are true and the reason is the correct explanation of the assertion.

(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.

(c) If assertion is true but reason is false.

(d) If assertion and reason both are false.
Assertion : Si-Si bond is weaker then Si-O bond.
Reason : Silicon forms double bonds with itself.

Q. Regarding the assertion and reason, choose the correct option.
Assertion [A]: Deforestation is one main factor contributing to global warming.
Reason [R]: Besides,

C O_{2}

, methane and CFCs are also greenhouse gases.

Q. Read the assertion and reason carefully to mark the correct option out of the options given below:
(a)If both assertion and reason are true and the reason is the correct explanation of the assertion
(b)If both assertion and reason are true but reason is not the correct explanation of the assertion
(c)If assertion is true but reason is false.
(d)If assertion and reason both are false.
Assertion: Salvarsan is an antidepressant drug.
Reason: It is a derivative of barbituric acid.

Q. Assertion: A cyclic parallelogram is a square.
Reason: Diameter is the largest chord in a circle.
(a) Both Assertion and Reason are true and Reason is a correct explanation of Assertion.
(b) Both Assertion and Reason are true but Reason is not a correct explanation of Assertion.
(c) Assertion is true and Reason is false.
(d) Assertion is false and Reason is true.

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Hydrides of Group 16

CHEMISTRY

Watch in App

explore_more_icon

Explore more

Hydrides of Group 16

Standard XII Chemistry

Join BYJU'S Learning Program

CrossIcon