121
3He has 2 protons, 1 neutron, and 2 electrons.
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.
# of protons:107 # of electrons:107 # of neutron:155
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.