Why do elements in a vertical column of the periodic table have similar chemical properties?

they have the same number of outer electrons.

they have equal numbers of protons and electrons.

they have the same number of electrons

they have the same number of protons.

Which of these best describes the scientific process

Select the correct answer. which phrase correctly describes temperature? o a. average rotational kinetic energy of the particles in an object o b. average energy of the particles in an object c. average translational kinetic energy of the particles in an object od. all energy possessed by the particles in an object

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