Question

in chemical formulas why Roman numbers we have used. please see the picture. please tell me fast I will make you brilliant​

Answer 1

in writing names and identifying charges. so Roman numerals are going to be used for a particular group of atoms or or elements called transition metals. ... the way that it bonds metals typically form what we call ions they form atoms. that give away electrons and they gain a positive charge.

Ϧ០ᖰ៩ ɨƬ'ន Ϧ៩ɭᖰ ƴ០⩏ 

Ϧ♬⩔៩ ♬ Ɯ០⩎ᖱ៩Ʀ⨏⩏ɭ ᖱ♬ƴ 

Answer 2

ANSWER -:

ROMAN NUMERALS  in a CHEMICAL FORMULA  indicate the charge on the metal cation before them. They are used in situations where the multiple oxidation states are available to the metal.