Author Question: The atomic number of an element that appears in the periodic table of the elements represents A) ... (Read 106 times)

schs14 · **on:** Jul 29, 2018

The atomic number of an element that appears in the periodic table of the elements represents

A) the number of neutrons in the nucleus of an atom of that element.
B) the number of protons in the nucleus of an atom of that element.
C) the number of atoms in a molecule of the element.
D) the number of electrons in the nucleus of an atom of that element.
E) the number of nuclei in an atom of the element.

Question 2

A ball is thrown vertically into the air. Because of air resistance, its time coming down compared with its time going up is

A) less.
B) the same.
C) more.