121
# of protons:107 # of electrons:107 # of neutron:155
None. Protons and electrons are not constituents of a neutron. Both neutrons and protons are constituents of an atom's nucleus (core), while the electrons are situated in the electronic cloud around the nucleus.
Calcium has 20 protons and electrons and a number of neutrons different for each isotope..
there are 9 protons and there are 19 neutrons and 17 electrons. plz contact me on facebook.com/gennamerryman
As all atoms mercury contain protons, neutrons and electrons. Mercury has 80 electrons and protons and a variable number of neutrons - depending on the isotope.
1 proton,1electron and no neutron
Carbon does not have an atomic number of 14.
As all atoms Mercury contain protons, neutrons and electrons. Mercury has 80 electrons and protons and a variable number of neutrons - depending on the isotope.
12 electrons. Remember, electrons and protons must be balanced in charge; neutron number may vary.
8 protons, 8 electrons, 8 neutrons in oxygen
The amount of electrons in mercury is (80)electrons.
Mercury (Hg) can ONLY have 80 protons, or else it cannot be mercury. The difference between its mass number (201) and 80 is 121, which is the number of neutrons. These can vary and are called isotopes. The number of protons can always only be 80 for mercury, tho.