A neutral atom of samarium has 2 valence electrons. If you write out the electron configuration of samarium, you will find that all of the shells up to four are full. When you get to shell five you have two electrons left. These are the two valence electrons. You can always find valence electrons by the electron configuration.
There are 17 protons in the nucleus of an atom of chlorine.
An atom of osmium has 76 protons in its nucleus.
Each barium atom has 56 protons in its nucleus.
A chlorine atom with an atomic number of 17 has 17 protons in its nucleus. The atomic number represents the number of protons in an atom.
An atom can be either an oxygen atom or a carbon atom. Atoms are the basic building blocks of matter and can vary in types based on the number of protons in their nucleus. Oxygen atoms have 8 protons, while carbon atoms have 6 protons.
21
There are 17 protons in the nucleus of an atom of chlorine.
An atom of osmium has 76 protons in its nucleus.
Each barium atom has 56 protons in its nucleus.
The number of protons in the nucleus of an atom is equal to the atomic number of the element.
There are 24 Protons in Chromium's nucleus.
The nucleus of a silicon atom contains 14 protons.
Lawrencium has 103 protons in the atomic nucleus.
There are four protons in the nucleus of a beryllium atom.
Bohrium has 107 protons.
there are 80 protons in the nucleus of an atom of mercury
Californium has 98 protons.