Boron and Fluorine in BF3

The video tutorial explains how to draw the Lewis structure for Boron trifluoride (BF3). It begins by calculating the total number of valence electrons using the periodic table, identifying Boron and Fluorine's valence electrons. The tutorial then places Boron at the center due to its lower electronegativity and forms covalent bonds with three Fluorine atoms. It completes the octets for Fluorine, noting Boron's exception to the octet rule, requiring only six electrons. Finally, the video describes the molecular geometry of BF3 as trigonal planar, with Fluorine atoms spreading out in the same plane.

How many valence electrons does Boron contribute in BF3?

• 8

• 5

• 3

• 7

Which group in the periodic table does Fluorine belong to?

• Group 13

• Group 17

• Group 15

• Group 18

In the Lewis structure of BF3, which element is placed at the center?

• Fluorine

• Boron

• Carbon

• Oxygen

What type of bond is formed between Boron and Fluorine in BF3?

• Hydrogen bond

• Ionic bond

• Covalent bond

• Metallic bond

How many valence electrons does each Fluorine atom have in the BF3 structure?

• 9

• 7

• 6

• 8

Why is Boron an exception to the octet rule in BF3?

• It follows the octet rule

• It can hold 10 electrons

• It can only hold 6 electrons

• It can only hold 4 electrons

What is the molecular geometry of BF3?

• Bent

• Tetrahedral

• Trigonal planar

• Linear

How do the Fluorine atoms arrange themselves in BF3?

• In a tetrahedral

• In a trigonal planar

• In a square planar

• In a straight line