Which statement below correctly describes what changes when moving downwards from fluorine to chlorine on the periodic table? A. The classification changes from nonmetal to metal
B. The number of valence electrons increases
OC. The number of total electrons increases
D. The ionic charge of the elements changes from positive to negative

1. a)c-14 has two more protons

2. d)they have different numbers of protons, neutrons, and valence electrons; they are all gases at room temperature.

3. c) iron and nickel.

the answer is yes

it has kinetic energy

reason

an object has kinetic energy when you stop the force carrying it, the object will stay in motion.

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