All of the elements in group 1 on the Periodic Table contain the same number of outer electrons as sodium, which is 1.
Everything in the group 1 of periodic table
Most elements contain a mixture of two or more isotopes.
The elements in a group, also called a family, have similar properties, one of which is the same number of valence electrons. This accounts for why the elements in a group have similar properties.
As you move across the periodic table from left to right, the elements within a given row have their electrons in the same energy level (given by the number of the row they are in). They way they differ is by the number of electrons. Moving from left to right, the number of electrons increase.
electron shells/engery levels all of the elements in period one have one electron shell/engery levels all of the elements in period two have two electron shells/engery levels etc.
what term describes elements that contain the same number of valence electrons
Because each chemical element has a different atomic structure and contain a different number of protons and electrons.
The number of elements that contain the same type of outer electrons as sodium is 11.
well of protons, STOP CHEATING IN WIKIANSWERS AND DO YOUR WORK
The Elements have a different Total Number of Electrons, but the same number of Valence Electrons.
group
group
No, they contain different number of electrons. Isotopes differ in their number of neutrons.
Periodic table
An example is silicon.
The valence electrons for elements in the same group stay the same, since the number of valence electrons corresponds to the group number.
The number of electrons is different because they are bonded