Question

H2 is a non polar molecule and NH3 is a polar molecule .why​

Answer 1

Answer:

ʀᴇᴍᴇᴍʙᴇʀ ᴛʜᴀᴛ ɴʜ3's ʟᴇᴡɪs sᴛʀᴜᴄᴛᴜʀᴇ ɪs ᴀ ᴄᴇɴᴛʀᴀʟ ɴɪᴛʀᴏɢᴇɴ ᴀᴛᴏᴍ, ᴀᴛᴛᴀᴄʜᴇᴅ ᴛᴏ 3 ʜʏᴅʀᴏɢᴇɴ ᴀᴛᴏᴍs ᴀɴᴅ ᴡɪᴛʜ ᴏɴᴇ ʟᴏɴᴇ ᴘᴀɪʀ ᴏғ ᴇʟᴇᴄᴛʀᴏɴs. ᴛʜᴇ ᴍᴏʟᴇᴄᴜʟᴇ ɪs ᴘᴏʟᴀʀ ʙᴇᴄᴀᴜsᴇ ᴛʜᴇ ᴍᴏʟᴇᴄᴜʟᴇ ɪs ɴᴏᴛ sʏᴍᴍᴇᴛʀɪᴄᴀʟ. ᴛʜᴇʀᴇ ɪs ᴀ ʟᴏɴᴇ ᴘᴀɪʀ ᴏɴ ᴛʜᴇ ɴɪᴛʀᴏɢᴇɴ, sᴏ ᴛʜᴇ ᴅɪᴘᴏʟᴇs ᴄᴀɴɴᴏᴛ ᴄᴀɴᴄᴇʟ.

Answer 2

because hydrogen atom share their electrons equally and Nh3 are polar due difference in electronegativity between N and H also arranged in non- symmetrical trigonal pyramidal shape