Question

choose the best answer for each answer and put the letter on the line next to the number. 1) the order of elements in the periodic chart is based on a. the number of protons in the nucleus b. the electric charge of the nucleus c. the number of neutrons in the nucleus d. atomic mass 2) atoms of elements that are in the same group have the same number of a. protons b. neutrons c. valence electrons d. protons and neutrons 3) which of the following metals is an alkali metal a. calcium b. magnesium c. mercury d. sodium 4) carbon and other nonmetals are found where on the periodic table? a. on the left side b. on the right side c. in the middle of the periodic table d. in the bottom rows

Explanation:

1. The periodic table is arranged by atomic number which is the number of protons.
2. Elements in the same group have the same number of valence electrons which determines their chemical properties.
3. Sodium is an alkali - metal in Group 1 of the periodic table.
4. Non - metals like carbon are located on the right side of the periodic table.

Answer:

1. a. The number of protons in the nucleus
2. c. Valence electrons
3. d. sodium
4. b. On the right side