5 Select the correct answer. Which of the following is a physical model of the Sun? A. an equation that describes the Sun’s motion
B. a chart that lists the temperatures of different parts of the Sun
C. a computer program that shows how the Sun changes over time
D. a paragraph that describes the Sun’s structure
E. a small yellow ball that represents the Sun

a

explanation:

a boiling water reactor does not boil the water. a pressurized water reactor boils the water faster. a pressurized water reactor is heated directly by the core. a pressurized water reactor does not use fission.

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.