What kind of bond will form between hydrogen and boron? and Special Bond

What kind of bond will form between hydrogen and boron?

I know it'll be some sort of covalent bond..? But I need a more specific answer (nonpolar covalent, polar covalent, or nonpolar covalent)

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alssoooo what kind of bond will form between potassium and bromine?


Bond best answer:

Answer by pisgahchemist
Look at the electronegativity difference.

Boron ... EN = 2.04
Hydrogen .... EN = 2.20
ΔEN = 0.16

An electronegativity difference of 0.16 by some standards doesn't even rank as being "polar", so you might say the bond is "nonpolar covalent." The bond has a percent covalent character of over 99%.

K and Br? Again, look at the electronegativities.

K ... EN = 0.82
Br ... EN = 2.96
ΔEN = 2.14

A ΔEN of 2.14 translates to a percent ionic character of 68%. Also keep in mind that there is no "single" K-Br bond in solid potassium bromide. Each potassium atom is bonded with it six nearest Br neighbors and vice versa via bonds with relatively high ionic character.

Bond

Special Bond


Image by gibsonsgolfer
Some of our SETAs (Special Education Teaching Assistants) work one on one with children, even on the playground. They often tell me they establish a special bond with the students over the year or years they work together.

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