what exactly is electron affinity ?
Hello Deepika soni
the electron affinity(Eea) of an atom or molecule is defined as the amount of energy released or spent when an electron is added to a neutral atom or molecule in the gaseous state to form a negative ion.
sir , how to calculate oxidation state?
Please watch this video.
How to conparc rodius in case of isoelectronic species
The size of isoelectronic species depends on nuclear charge. Greater the nuclear change, smaller would be the size.
In group 15,from Sb to Bi size increase but not as much expected,
Is this because of both d and f contraction or only f contraction?
Both. SB and Bi have completely filled d and f subshells which have least shielding effects. Thus they do not guard the valence electrons feel the almost whole nuclear charge. This results in the attraction of valence electrons towards nucleus and hence size decreases.
one charge less oxygen km krne pr to ite suffix lagta h pr sir n ate suffix lagaya and per prefix hata diya why??
This is because of highest oxidation state of Cl in Clo4(-) and Clo3(-) but in Clo4(-) it has max oxygen so differentiate between both the "ate" prefix has been used.
PS: please watch the video carefully again for better understanding. You will get your answer.
sir n glt add kiya and naming bhi glt ho gy h??
we are sorry for this mistake. Inconvenience caused is deeply regreted.
316 is the right answer and hence the name will be (Triunhexium).
three B kese ho gya block number lanthanum ka??
sir n btaya ki d-block elements are placed in subgroup A and lanthanum ka valence electron to 2 h to block nuber 2 hona chahiye
hence 2A block number hona chahiye lanthanum ka??
plz clear this doubt
the ground state configuration of lanthanum is an exception of Aufbau rule.
Request you to watch this video again for the better understanding.
kyu krenge 0.85 s multiply phle wale questn m to sr n 0.35 s multiply kra tha??
value chnge kyu krni h reason
For ns or np valence electrons
this is the rule used to calculate the effective nuclear charge.
Why it's answer is not b question no. 78
We are not allowed to answer the question outside from the NCERT and the platform videos. Apert from this please let us know the correct option. So that i can explain you this in a better way.
bt sr n to btaya tha ki kisi 1 element ka electron affinity and ionisation enthalpy ki value same hoti h
to sr yha kyu kh rhe h ki IE not equal to Ea??
thanks for informing us. We will fix it as soon as possible and let you know when its done.