The number of electrons in valance shell of a semiconductor
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four
The valency of semiconductor (Ge or Si) is four, hence it has 4 valence electrons in the outermost orbit of the Ge or Si-atom
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Explanation:
four electrons
ᴛʜᴇ ᴇʟᴇᴄᴛʀᴏɴꜱ ɪɴ ᴛʜɪꜱ ꜱʜᴇʟʟ ᴀʀᴇ ᴛʜᴇ ᴏɴᴇꜱ ᴛʜᴀᴛ ꜰᴏʀᴍ ʙᴏɴᴅꜱ ᴡɪᴛʜ ɴᴇɪɢʜʙᴏʀɪɴɢ ᴀᴛᴏᴍꜱ. ꜱᴜᴄʜ ʙᴏɴᴅꜱ ᴀʀᴇ ᴄᴀʟʟᴇᴅ ᴄᴏᴠᴀʟᴇɴᴛ ʙᴏɴᴅꜱ. ᴍᴏꜱᴛ ᴄᴏɴᴅᴜᴄᴛᴏʀꜱ ʜᴀᴠᴇ ᴊᴜꜱᴛ ᴏɴᴇ ᴇʟᴇᴄᴛʀᴏɴ ɪɴ ᴛʜᴇ ᴠᴀʟᴇɴᴄᴇ ꜱʜᴇʟʟ. ꜱᴇᴍɪᴄᴏɴᴅᴜᴄᴛᴏʀꜱ, ᴏɴ ᴛʜᴇ ᴏᴛʜᴇʀ ʜᴀɴᴅ, ᴛyᴩɪᴄᴀʟʟy ʜᴀᴠᴇ ꜰᴏᴜʀ ᴇʟᴇᴄᴛʀᴏɴꜱ ɪɴ ᴛʜᴇɪʀ ᴠᴀʟᴇɴᴄᴇ ꜱʜᴇʟʟ
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