Thank you for registering.

One of our academic counsellors will contact you within 1 working day.

Please check your email for login details.
MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping

This section contains multiple questions. Each question contains STATEMENTS 1 (Assertion) and STATEMENT 2 (Reason). Each question has 4 choices (A), (B), (C), and (D), out of which ONLY ONE is correct. (A) Statement 1 is True and statement 2 is True; statement 2 is correct explanation for statement 1. (B) Statement 1 is True and statement 2 is True; statement 2 is not a correct explanation for statement 1. (C) Statement 1 is True and statement 2 is False. (D) Statement 1 is False and statement 2 is True. Statement 1: Among the 16 th group elements, oxygen has the lowest value of first electron affinity. And Statement 2: Oxygen has extremely small size.



This section contains multiple questions. Each question contains STATEMENTS 1 (Assertion) and STATEMENT 2 (Reason). Each question has 4 choices (A), (B), (C), and (D), out of which ONLY ONE is correct.


 


(A)   Statement 1 is True and statement 2 is True; statement 2 is correct explanation for statement 1.


(B)   Statement 1 is True and statement 2 is True; statement 2 is not a correct explanation for statement 1.


(C)   Statement 1 is True and statement 2 is False.


(D)   Statement 1 is False and statement 2 is True.


 






          Statement 1: Among the 16th group elements, oxygen has the lowest value of first electron affinity.


 


          And


 


Statement 2: Oxygen has extremely small size.



 

Grade:11

1 Answers

Hrishant Goswami
343 Points
7 years ago

(A)    Electron affinity values of 16th group elements are: (in kJ mol–1)

        S: –200; Se:  - 195; Te – 190.1; Br: - 180; O: - 141

        Because of very small size of oxygen atom (and the high electron density), the first incoming electron is repelled by the electrons of atom present in very small second orbit.

Think You Can Provide A Better Answer ?

Provide a better Answer & Earn Cool Goodies See our forum point policy

ASK QUESTION

Get your questions answered by the expert for free