X(aq.) gives chocolate ppt. in the presence of K4Fr X(aq.) gives white ppt. which is insoulble in dilute nitric acid then X will be?

X(aq.) gives chocolate ppt. in the presence of K4Fr X(aq.) gives whi

1.	X(aq.) gives chocolate ppt. in the presence of K4Fr X(aq.) gives white ppt. which is insoulble in dilute nitric acid then X will be?
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