Select the safe methods to determine if a hot plate is heating. Select one or more: a. Place the back of your hand a few inches above the surface. b. Observe the heating indicator light (if available). c. Pour some cold water on the surface and see if you observe steam. d. Place the palm of your hand on the surface.

c is having 4 valence electrons and is bonded to three hydrogens and one sulphur atom, therefore, the number of bond pair is equal to four. as all the valence electrons are used in forming the bonds so, there is no lone pair left on carbon.

s is having 6 valence electrons and is bonded to one other sulfur atom and one carbon atom, therefore, the number of bond pair is equal to 2. as only two valence electrons are used in forming the bonds so, four electrons are left. therefore, two lone pairs are present on s.

answer seismograph;

answer///carbon;