Ans. 90 are naturally occurring whereas 28 are man-made ele
26. Name two metals which exist as liquids above 30°C.
ns. Mercury and Goldim
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The metals which exists as liquids above 30 degree celcius are :- 1)Mercury-(Also in room temperature) 2)Cesium 3)gallium
Mercury-(Also in room temperature)
Cesium.
gallium.
Explanation:
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