Which of the following statements are (T) and which are false (F) ? (i) Stock notation nomenclature is used for all metallic compounds. (ii) The oxidation state of fluorine (F) is always -1 in its compounds (iii) CrO_(5), possesses peroxy rings, where oxidation number of Cr is +6 The oxidation number of .O. atom in HOF and HO_(2)^(-) is 0 and -1 respectively

Which of the following statements are (T) and which are false (F) ? (

1.	Which of the following statements are (T) and which are false (F) ? (i) Stock notation nomenclature is used for all metallic compounds. (ii) The oxidation state of fluorine (F) is always -1 in its compounds (iii) CrO_(5), possesses peroxy rings, where oxidation number of Cr is +6 The oxidation number of .O. atom in HOF and HO_(2)^(-) is 0 and -1 respectively
Answer» FTFT FTTT FTTT FTTF Solution :(i) Stock notation method is for metals having variable oxidation STATES. (ii) F is most negative element and ___ (F) always it is (- 1) in its compounds __ (T) (iii) `CrO_(5)` has two peroxy bonds -O-O- and the oxygen atoms have -1 oxidation NUMBER. `(CR)+2(O-O)+(O)=0` `thereforex+2(-2)+(-2)=0` `thereforex=+6` `Cr" of "CrO_(5)" is "+6" "...(T)` (iv)