Which of the following molecules has a tetrahedral shape?
a. pcis
b. h,0

c. siha
od. всіз

They are all decomposition reactions.

If a hydrogen atom is neutral, it must also have  one electron. an oxygen atom (o) has an atomic number of eight (8). this means a neutral oxygen atom has eight protons and eight electrons. the element actium (ac) has an atomic number of 89, so it has 89 protons and 89 electrons in a neutral atom