Chemistry, asked by harsnig, 1 year ago

the correct order of first ionisation potential among following elements Be, B, C IS?

Answers

Answered by SHIVAANSHSINGH

The order of first ionisation potential is C > Be > B. The reason is carbon is having more effective nuclear charge which attracts the outermost electron towards the nucleus more and need more energy

SHIVAANSHSINGH: hope u understand

harsnig: but s shell is nearer to nucleus due to which it will hold the electron more strongly as compared to p shell electron..... that is a fact as well

priyankagupta280201: Sorry I didn't give right answer.next time I will think first then answer

harsnig: reason is still not clear to me......... can someone please give me proper reason?

SHIVAANSHSINGH: there are many factors affecting ionisation potential

SHIVAANSHSINGH: so according to all u can't understand

SHIVAANSHSINGH: the data are used to compare

harsnig: ok .........

priyankagupta280201: On moving left to right effective nuclear charge increases and carbon is in 14 group .size is small and more energy is needed to remove electron so it has more ionisation enthalpy.

priyankagupta280201: Be although comes before boron but in beryillium electron have to be removed from s orbital and in boron electron removed from p orbital. So be has more I. E

Answered by priyankagupta280201

Be>B>C is correct order

harsnig: can u please explain the reason?

priyankagupta280201: It will be like C>Be>B because on moving across period I. E increase and B has more I.E due to electron in s orbital

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