Part 1: mission preparation: use the following word bank to complete the sentences accurately. atomic mass protons column electrons atomic number neutrons row 11 12 23 a. the of an element includes atomic number plus the number of neutrons. b. the atomic number represents the number of and in an element. c. elements found in the have similar chemical properties. d. an element with an atomic number of 11 and an atomic mass of 23 will have neutrons total.

The atomic mass of an element includes atomic number plus the number of neutrons.
B. The atomic number represents the number of protons and electrons in an element.
C. Elements found in the samecolumn have similar chemical properties.
D. An element with an atomic number of 11 and an atomic mass of 23 will have 12 neutrons total.  atomic mass is the sum of electrons ,protons and neutrons. atomic number is the sum of protons and electrons. we can find the number of neutrons by subtracting atomic number from atomic mass.

The flowers in a flower arrangement are actually alive