Question

why there is requirement of writing molecular formulae of different compounds​

Answer 1

Answer:

The requirements for writing the molecular formulae of compounds are the symbols of the radicals along with their charges (valencies). ... The molecular formulae of the compounds are written indicating the number of atoms as subscript in the formulae.

Explanation:

ʜᴏᴘᴇ ɪᴛ ʜᴇʟᴘꜱ ᴘʟᴇᴀꜱᴇ ᴍᴀʀᴋ ᴍᴇ ᴀꜱ ʙʀᴀɪɴʟɪᴇꜱᴛ. ᴀɴᴅ ɪꜰ ʏᴏᴜ ɢᴏᴛ ʏᴏᴜʀ ᴀɴꜱᴡᴇʀ ʟɪᴋᴇ ᴍᴇ. ᴀɴᴅ ᴘʟᴇᴀꜱᴇ ʜᴇʟᴘ ᴍᴇ ʙʏ ꜰᴏʟʟᴏᴡɪɴɢ ᴍᴇ ᴀɴᴅ ᴋɴᴏᴡ ᴍᴏʀᴇ ᴀɴꜱᴡᴇʀꜱ.ʜᴀᴠᴇ ᴀ ɴɪᴄᴇ ᴅᴀʏ  

ʏᴏᴜʀꜱ ꜰʀɪᴇɴᴅʟʏ 

-ᴍʀʙᴀʙʙᴜʏᴛ

Answer 2

Answer:

The requirements for writing the molecular formulae of compounds are the symbols of the radicals along with their charges (valencies). ... The molecular formulae of the compounds are written indicating the number of atoms as subscript in the formulae.