Electrons.
all in the blanks.
1. the atomic number of potassium is
19
therefore there are
__protons in the
of the potassium atom. the symbol
of potassium is
potassium has a mass of
it
2. number 79 on the periodic table is
its symbol is
is a
because the color of the box is green. it has a mass of -
3. there are
metalloids on the periodic table. they are called metalloids because
they have characteristics of both
and non-
4. on the periodic table of the elements, the elements are classified into solids, liquids, and
in the individual boxes, the solids are written in
the liquids are written in _
and gases are
written in

1)  Potassium's number of protons is 19

    Symbol is K

    Mass number is 39.1 u

2) Number 79 on periodic table is Gold

   Symbol is Au,

   Mass number is 196.97

3) Metals and non-metals

4)  Gases

    Iodine

    Bromine    

    Fluorine, chlorine

Explanation:

The modern periodic table is the arrangement of atoms in an increasing atomic number.

The Russian chemist, Dmitri Mendeleev arraigned the elements as they appear in the modern periodic table.

It has 18 groups and 7 periods.

These groups belong to the specific classification of the elements.

The periods referred to as the horizontal rows on the periodic table have given much importance than the vertical columns for the actinides and lanthanides.

It is easy to identify the characteristics of the elements present in the modern periodic table.

c because the action was the roller coaster reaches bottom of hill (action) reaction would be blood tends to drain away from head

hope this !