Question

1. Noble gases

2. Combination reaction

3. Factor affecting the value of gravity
Give example​

Answer 1

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❥ thє nσвlє gαsєs αrє thє chєmícαl єlєmєnts ín grσup 18 σf thє pєríσdíc tαвlє. thєч αrє thє mσst stαвlє duє tσ hαvíng thє mαхímum numвєr σf vαlєncє єlєctrσns thєír σutєr shєll cαn hσld. thís chєmícαl sєríєs cσntαíns hєlíum, nєσn, αrgσn, krчptσn, хєnσn, αnd rαdσn.

❥ ᴀ ᴄᴏᴍʙɪɴᴀᴛɪᴏɴ ʀᴇᴀᴄᴛɪᴏɴ ɪs ᴀ ʀᴇᴀᴄᴛɪᴏɴ ɪɴ ᴡʜɪᴄʜ ᴛᴡᴏ ʀᴇᴀᴄᴛᴀɴᴛs ᴄᴏᴍʙɪɴᴇ ᴛᴏ ғᴏʀᴍ ᴏɴᴇ ᴘʀᴏᴅᴜᴄᴛ. ᴏxʏɢᴇɴ ᴀɴᴅ ᴛʜᴇ ʜᴀʟᴏɢᴇɴs ᴀʀᴇ ᴠᴇʀʏ ʀᴇᴀᴄᴛɪᴠᴇ ᴇʟᴇᴍᴇɴᴛs ᴀɴᴅ ᴀʀᴇ ʟɪᴋᴇʟʏ ᴛᴏ ᴜɴᴅᴇʀɢᴏ ᴄᴏᴍʙɪɴᴀᴛɪᴏɴ ʀᴇᴀᴄᴛɪᴏɴs ᴡɪᴛʜ ᴏᴛʜᴇʀ ᴇʟᴇᴍᴇɴᴛs.

❥ℱᗅℂᝨᝪℛՏ ᗅℱℱℰℂᝨⅈℕℊ ᏉᗅℒႮℰ ᝪℱ ℊℛᗅᏉⅈᝨℽ

• Altitude above the earth's surface

• Depth below the earth's surface

• The shape of the earth

• Rotational motion of the earth.

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