An atom has 5 protons, 4 electrons, and 5 neutrons. Which of the following reasons represents why this is an atom of
the element boron?

A ) The atom has 5 neutrons, just like every atom of boron

B ) The atom has 4 electrons, just like every atom of boron

C ) The atom has 14 total particles, in a combination of 5-5-4 just like every atom of boron

D ) The atom has 5 protons, just like every atom of boron

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Compare the valence electron configuration of the nobles gas elements seen here. what statement is correct?

Why is the bond angle in a water molecule less than the bond angle of methane? a. the central oxygen atom in water has two lone pairs of electrons, whereas the central carbon atom in methane has no lone pairs. b. the central hydrogen atom in water has one lone pair of electrons, whereas the central carbon atom in methane has two lone pairs. c. the central oxygen atom in water has four lone pairs of electrons, whereas the central carbon atom in methane has only one lone pair. d. the central oxygen atom exerts more repulsive force on surrounding atoms than the central carbon atom in methane does. reset next

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