Sawaal
106
Q:

Boron cannot form which one of the following anions?

(1) BO2-

(2) BF63-

(3) BH4-

(4) B(OH)4-

A) Option 1 B) Option 2
C) Option 3 D) Option 4

Answer:   B) Option 2



Explanation:

Due to absence of low lying vacant d orbital in B, sp3d2hybridization is not possible hence BF63-will not formed. 

Subject: Chemistry
Exam Prep: AIEEE
Related Questions
Q:

The fundamental particles present in equal numbers in neutral atoms are

A) protons and electrons B) neutrons and electrons
C) protons and neutrons D) protons and positrons
 
Answer & Explanation Answer: A) protons and electrons

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry

17 9080
Q:

The discovery of neutron became very late because

A) it is present in nucleus B) it is a fundamental particle
C) it does not move D) it does not carry any charge
 
Answer & Explanation Answer: D) it does not carry any charge

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry

63 16916
Q:

Neutron was discovered by

A) J.J.Thomson B) Chadwick
C) Rrutherford D) Priestley
 
Answer & Explanation Answer: B) Chadwick

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry

8 5407
Q:

Cathode rays have

A) mass only B) charge only
C) no mass and no charge D) mass and charge both
 
Answer & Explanation Answer: D) mass and charge both

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry

7 5500
Q:

Cathode rays are 

A) electromagnetic wave B) stream of alpha particle
C) stream of electrons D) radiations
 
Answer & Explanation Answer: C) stream of electrons

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry

13 5888
Q:

An alloy is

A) a compound B) an allotropic form
C) an isomer D) a mixture
 
Answer & Explanation Answer: D) a mixture

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry

11 5582
Q:

The most abundant metal in earth crust is

A) Iron B) magnesium
C) calcium D) aluminium
 
Answer & Explanation Answer: D) aluminium

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry

6 4370
Q:

The credit for the discovery of transuranic element goes to

A) Hahn B) Rutherford
C) Seaborg D) Curie
 
Answer & Explanation Answer: C) Seaborg

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry

34 12604