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preparation and structure of diborane

Pranaya Walhekar 11th Dec, 2021

Hello Candidate ,

Structure of Diborane

The structure of Diborane molecule consists of four hydrogen (https://byjus.com/chemistry/hydrogen/) atoms and that of two boron atoms coming on the same plane. In between these planes, there are said to be two dividing atoms of hydrogen.

The boron atom is known to be sp3 hybridized and has four hybrid orbitals. From these four hybrid orbitals, three of the orbitals have one electron each, and of which one is an empty orbital. The two electrons of the hybrid orbitals in each of the boron atoms form 2 bonds with the 1s hydrogen atoms. The two atoms of boron left with that of each unpaired electron orbital and empty orbital forms the two bridgings (B–H–B) bonds with that of the two 1s hydrogen atoms, is also called as the banana bond.

Preparation of Diborane

The action of a metal hydride with boron produced diborane. This approach is common in the industrial production of diborane.

The reaction of iodine with sodium borohydride in diglyme can also produce diborane in small quantities.

2NaBH 4 + I2  → B 2 H 6 + 2NaI + H 2

On heating magnesium boride with HCl, a mixture of volatile boranes is obtained.

2Mg 3 B 2 + 12HCl → 6MgCl 2 + B 4 H 10 + H 2

B 4 H 10 + H 2 → 2B 2 H 6



All the best !!

307 Views

What does academic diversity means at IIM s selection process?

piyush singh 17th Dec, 2021

Hello Aspirant,

In IIM(Indian Institute of Management) academic diversity means that IIM  do not want  students of same background(All engineers) rather they wants students of Diverse academic background that means they want few students of Engineering background few of  management , medical , commerce etc , so that their batches  remains diverse and not monotonic.

They also give a little bit higher preference to student of non-engineering background as there are so many engineers applying and clearing for CAT exams.

Hope this helps.

211 Views

Does NMAT consider your academic record like IIM-ABC does?

piyush singh 20th Dec, 2021

Hello Aspirant,

NMAT is just an exam to get admission in NMIMS(Narsee Monjee Institute of Management Studies) , it is NMIMS which conducts the admission procedure and decides who gets selected.

Yes ,NMIMS consider your academic background as well as your work experience.

The distribution of different aspects considered before selecting a candidates are

  1. NMAT Marks : 70%
  2. CD                   :10%
  3. Interview        :10%
  4. Academic record (10,12 graduation ) : 5%
  5. Work experience           :5%

You can see that the weightage of academic record is very low but higher record will always help increase your qualification chances,

Hope this helps.

20 Views

for this academic 2021-2022 supreme court gave verdict oci candidates apply under general category.

Ishani Bhattacharya 10th Dec, 2021

Good morning!

Hope you are doing fine!

The Supreme Court Monday permitted all eligible Overseas Citizens of India (OCI) candidates to participate in general category NEET counselling for undergraduate and postgraduate medical courses.

Please be specific about your question, as on which context you are asking that, so that it'll be much easier to explain.

44 Views

is there hostel facility available for girls and what is the fees should be paid per year for hostel and academic

Priyanka 8th Dec, 2021

hai, it seems your information is incomplete as you did not provide the details of college in which you want to take admission

219 Views

No of mbbs seats in Telangana for the academic year 2021-2022

Varshini 1st Dec, 2021

Hello, According to the NEET 2021 I listed the No.of seats allocated for the 2021 year below:

  1. No.of seats in a Government college, Telangana - 1790
  2. Total Private seats in Telangana - 345
  3. Total No.of MBBS seats in Telangana - 5240

Some of the Government Medical College in Telangana includes

  1. All India Institute of Medical Sciences - 50 seats
  2. Employees State Insurance Corporation Medical College - 100 seats
  3. Gandhi Medical college - 250 seats
  4. Kakatiya Medical College - 250 seats
  5. Osmania Medical College - 250 seats
  6. Rajiv Gandhi Institute of Medical Sciences - 150 seats

For more information visit the link https://medicine.careers360.com/articles/telangana-mbbs-admission


100 Views

No of mbbs seats in Telangana state for the academic year 2021-2022

Anurag Khanna 1st Dec, 2021

Hello Aspirant,

As per the latest data available with us, for Academic year 2021-22 there are total 5045 seats available for admission to MBBS course out of which, 1845 seats are in Government medical colleges, 2750 in private medical colleges and 450 in private minority medical colleges.


As of now Kaloji Narayana Rao University of Health Sciences (KNRUHS), Warangal has not released any notification regarding dates for NEET 2021 Counselling for state quota of Telangana, so you have to wait for it.


For more details about Telangana MBBS counselling it is recommended that you should go through an article given below :-

Telangana NEET Counselling 2021 - Schedule, Process, Seats, Allotment Result (careers360.com)


To have a list of all those colleges which you can get based upon your marks, category, and state you can use NEET College Predictor because it will make you comfortable while choice filling in counselling :-

https://medicine.careers360.com/neet-college-predictor?icn=QnA&ici=qna_answer


NEET 2021 Cut-off goes like :-


-->>> General - 50th percentile - 720-138 marks

-->>> SC/ST/OBC - 40th percentile - 137-108 marks

-->>> General-PwD - 45th percentile - 137-122 marks

-->>> SC/ST/OBC-PwD - 40th percentile - 121-108 marks


You can check out complete details regarding NEET qualifying cut-offs from the link given below :-

https://medicine.careers360.com/articles/neet-cut-off

I hope this information helps you.

Good Luck!!

31 Views

Is there any college offering MA political science(regular) for 2021 academic year?

Shreyaadev7 30th Nov, 2021

Dear Aspirant,

Yes, there are a few colleges that provide MA political science(regular) for 2021 academic year :

  1. Madras Christian College - [MCC], Chennai
  2. Hindu College, Delhi
  3. Lady Shri Ram, Delhi
  4. Presidency College, Chennai

For further details about the college and course check the link below:

https://university.careers360.com/delhi-university-college-predictor

Thank you!

Hope I've answered your question.

31 Views

Rajarajeshwari college of engineering how is college in academic and placement

Tanya Gupta 9th Jan, 2022

Hi,


Rajarajeshwari College of engineering is a very good college in terms of academics and placements. The teachers here are very experienced and qualified. There are a number of exams other than semester exams which makes semester exams seem easier. You'll feel much more confident while giving the semester exams. When it comes to placements, around 86% of the students get placed in top companies like Infosys, Tata, Adobe, Wipro, etc. A large number of students get placed as full times interns as well. The highest package offered is 12 LPA and the average package offered is 4.5 LPA.


I hope this helps,


All the best.

23 Views

I have completed my inter in 2021 and I wanna join in bsc mlt in Telangana.does notification for paramedical degree courses came for academic year 2021-2022?

Shivam Gupta 27th Dec, 2021

Dear Aspirant,

Hope you are doing great,


As you want the more detailed information about the paramedical degree courses for the year 2021-2022:

https://school.careers360.com/articles/list-of-paramedical-courses

This link will provide the complete details about scope, paramedical courses admission process, course fee and top ranked colleges for that matter.


I hope this will help you,

Best of Luck :)

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