82 in the stable isotope 139 La which makes up over 99% of naturally occuring lanthanum. It has 81 in the stable isotope 137La which makes up <1% of naturally occuring Lanthanum.
How many neutrons would it have if it had 11 neutrons? 11.
There are 71 neutrons in tellurium-123
there are 66 protons & 97 neutrons
12 neutrons are in sodium (Na).
neutrons = 40 - 18 = 22
Lanthanum has 57 protons and 81-82 neutrons.
1
Protons: Any atom of lanthanum has 57 protons. Neutrons: Lanthanum has 30 radioactive isotopes with neutron numbers ranging from 60 to 96 but the only stable isotope(139La) has 82 neutrons. Electrons: The number of electrons is normally the same as the number of protons.
Lanthanum's atomic number is 57 thus it has 57 protons, the number of protons an atom has is equal to the atomic weight, in this case 141 minus the number of protons or 57 so, 141-57=84 Lanthanum-141 has 84 neutrons.
Lanthanum has 2 valence electrons.
57
Lanthanum is not an allot.
Lanthanum with atom number 57 and mass number 139 has: 57 protons, 82 neutrons (since 57+82=139) and 57 electrons. La-138 has 81 neutrons (i.s.o. 82) with 57 protons and 57 electrons.
what is a good slogan for Lanthanum
Lanthanum is used in flints for lighters
It is Lanthanum
The Boiling point of lanthanum: