IIT JEE , AIEEE Forum - Chemistry , Inorganic Chemistry - question on d-block elements

nandithac

1)in the N2 FAMILY THE MELTING POINT DECREAESES DOWN THE GROUP from Ar to Bi BUT METALLIC CHARECTER INCREAESES SO MP SHOULD INCREASE NA????

2)WHY IS IT NESSACERY TO REMOVE CO IN HABERS PROCCES IS THE QUESTION IN NCERT TEXT BUT WHERE DOES CO COME IN HABERS PROCCES???????

Aatish

Melting Point initially increases DOWN the group from Nitrogen to Arsenic but then decreases for Sb and Bi because of INERT PAIR EFFECT.....due to which Sb and Bi are left with only three electrons to form bonds with.....while for P and As 5 electrons were available to form covalent bonds with.....so bonding in Sb and Bi becomes weaker and their m.p lowers..........

and for the second question there might be some PRINTING MISTAKE in the book.......in place of CO there it should be NH₃....and the reason goes with Le-Chatelier's Principle........

Aatish

I hope its clear Now........

krishna.gopal

Perfect answer Aatish. Well done

nandithac

thank aatish i got it cleared now

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