Using the periodic table, complete the table to describe each atom. type in your answers. a ? b? c? d? e? f?

First row:

Second row:

The atomic number of an atom is the same as its number of protons. There are 20 protons in the atom in the first row. Its atomic number will be 20.

The mass number of an atom is the sum of its number of protons and its number of neutrons.

Elements on an periodic table are arranged by their atomic number. What's the symbol of the element with atomic number 20? What's the symbol of the element with atomic number 9? The element with atomic number nine is fluorine. The symbol for fluorine is "F", which happens to be the label for that blank.

a polar bond is formed when electrons are shared unevenly between atoms

each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.