The valency of aluminium is 3 instead of 5 because the energy required to remove 3 electrons from the outermost shell is less than the energy required to add 5 electrons. Because aluminum has three, that means three fluorines can bond. The make the formula AlF3, also known as aluminum trifluoride. Each of the fluorine atoms gets an electron to fill their shell, and the aluminum loses three, giving it a filled shell too (remember, aluminum has three extra electrons).

0Thank You

ANSWER

Related Questions

Why is it advised to tie any luggage kept on the roof of a bus with a rope ?

Posted by Huda Fatima 2 months, 1 week ago

CBSE > Class 09 > Science

2 answers

Define speed and velocity provide one similarity and one difference between them

Posted by Himanshi Sharma 2 months, 1 week ago

CBSE > Class 09 > Science

0 answers

What is ER??

Posted by Maitri Patel 2 months, 2 weeks ago

CBSE > Class 09 > Science

1 answers

WHAT IS UNIT OF LIFE

Posted by Yash Dwivedi 2 months, 1 week ago

CBSE > Class 09 > Science

3 answers

A boxer moves his head backward when his opponent blows a punch.

Posted by Prasanna Mendon 2 months, 1 week ago

CBSE > Class 09 > Science

1 answers

If one mole of carbon atoms weighs 12 grams, what is the mass (in grams) of 1 atom of carbon?

Posted by Anmol Kumar 2 months, 1 week ago

CBSE > Class 09 > Science

0 answers

This content has been hidden. One or more users have flagged this content as inappropriate. Once content is flagged, it is hidden from users and is reviewed by myCBSEguide team against our Community Guidelines. If content is found in violation, the user posting this content will be banned for 30 days from using Homework help section. Suspended users will receive error while adding question or answer. Question comments have also been disabled. Read community guidelines at https://mycbseguide.com/community-guidelines.html

Few rules to keep homework help section safe, clean and informative.

Don't post personal information, mobile numbers and other details.
Don't use this platform for chatting, social networking and making friends. This platform is meant only for asking subject specific and study related questions.
Be nice and polite and avoid rude and abusive language. Avoid inappropriate language and attention, vulgar terms and anything sexually suggestive. Avoid harassment and bullying.
Ask specific question which are clear and concise.

Remember the goal of this website is to share knowledge and learn from each other. Ask questions and help others by answering questions.

Posted by Abhi Sandhu 2 months ago

CBSE > Class 09 > Science

1 answers

What are the parts of a flower

Posted by Op Garg 2 months, 1 week ago

CBSE > Class 09 > Science

2 answers

Don't post personal information, mobile numbers and other details.
Don't use this platform for chatting, social networking and making friends. This platform is meant only for asking subject specific and study related questions.
Be nice and polite and avoid rude and abusive language. Avoid inappropriate language and attention, vulgar terms and anything sexually suggestive. Avoid harassment and bullying.
Ask specific question which are clear and concise.

Remember the goal of this website is to share knowledge and learn from each other. Ask questions and help others by answering questions.

Posted by Samir Chakma 1 month ago

CBSE > Class 09 > Science