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Chemistry 7 Online
OpenStudy (anonymous):

in which case no hydrogen bonding is possible? A) HCL B) NH3 C) HF D)H2O

OpenStudy (anonymous):

EXPLAIN WHY ?

OpenStudy (***[isuru]***):

Hydrogen bonding occurs when a hydrogen atom bonds with strongly electro-negative element in the 2nd period like N ,O and F...

OpenStudy (anonymous):

i didn't get it what you said

OpenStudy (***[isuru]***):

do u know about electronegativity ?

OpenStudy (anonymous):

what you meant to say

OpenStudy (anonymous):

yup

OpenStudy (***[isuru]***):

what happens when the electronegativty of an element increase ?

OpenStudy (anonymous):

electonegative means tendency to give away the extra e's

OpenStudy (anonymous):

or tendency to attract the bonding

OpenStudy (***[isuru]***):

no.... eletronegativity means the tendency of an atom to attract electrons toward it self...

OpenStudy (anonymous):

okay

OpenStudy (anonymous):

but it is said like Cl {chlorine} it gives away one e's to to become electronegative

OpenStudy (***[isuru]***):

Cl does not give away electrons... It attracts them...

OpenStudy (anonymous):

but it is Cl negative

OpenStudy (***[isuru]***):

every element has a electronegativity value... there r various scales to measure them... pauling scale is an example

OpenStudy (***[isuru]***):

in puling scale even Na who gives away electrons to form bonds have en electronegative value

OpenStudy (***[isuru]***):

but it's a very small value..

OpenStudy (anonymous):

thats what im saying

OpenStudy (anonymous):

Na + and Cl - form NaCl

OpenStudy (anonymous):

so acc to you Cl is electronegative so it attracts Na

OpenStudy (***[isuru]***):

nope.. im saying something different...

OpenStudy (***[isuru]***):

Cl attracts electrone

OpenStudy (***[isuru]***):

so it attracts the electron of Na... so Na will get a delata (+) charge... since Cl attract electron cl will gain a (-) charge... now the static electric charges of Cl (+) and Na(-) attracts both of them together , thus a bond form

OpenStudy (anonymous):

okay got it bro

OpenStudy (anonymous):

in simple words the es which have more electonegative charge is more powerful

OpenStudy (***[isuru]***):

yep!

OpenStudy (***[isuru]***):

to create hydrogen bonding this value should stay at maximum

OpenStudy (***[isuru]***):

and only N , O and F has enough eletrconegativity for it...

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