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All atoms in the first group (column) of the Periodic Table have only one electron in the outer shell. Those heavier than hydrogen (H) are called the alkali metals.
The alkali metals are lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr).
All have an outer s electron shell. The question asks for a single element in an "outer energy level" and all seven of these atoms fit the question.
There are other atoms which may be characterized as having a single outer electron, but the chemistry and physics of those atoms make things a bit more complicated and a longer discussion would be necessary instead of a simple answer to a simple question.
What else can I help you with?
An element that is considered to be unreactive because it has a filled outer energy level is?
A noble gas is considered unreactive because it has a filled outer energy level. The full outer energy level provides stability and low reactivity, as the element does not need to gain or lose electrons to achieve a stable electron configuration.
How many electrons does Cesium have in its outer energy level?
Cesium, or Cs, has 1 valence electron.
How many electrons in the outer energy level does bromine have?
Bromine has 7 electrons in its outer energy level, making it one electron short of a full outer shell.
How many electrons are in a neutral sodium's outer energy level?
A neutral sodium atom has 11 electrons. In its outer energy level, it has 1 electron. Sodium's electron configuration is 2-8-1.
How many electron are needed to fill the outer energy level of sulfur?
Sulfur has 6 electrons in its outer energy level. This means it needs 2 more electrons to fill its outer energy level, for a total of 8 electrons.
What element has three or fewer electrons in the outer energy level?
nobel gases has few electron in the outer energy level
How many electrons are there in potassium's outer energy level after the bond has formed?
Potassium has 1 electron in its outer energy level. When it forms a bond, it typically donates this electron to another element, leaving it with a full outer energy level.
How many electron are in its outer energy level?
This is a chemical element. You can find the how many electron in a single atom by using a periodic table.
An element that is considered to be unreactive because it has a filled outer energy level is?
A noble gas is considered unreactive because it has a filled outer energy level. The full outer energy level provides stability and low reactivity, as the element does not need to gain or lose electrons to achieve a stable electron configuration.
How many electrons does Cesium have in its outer energy level?
Cesium, or Cs, has 1 valence electron.
What uses the symbol for an element and dots representing the number of electrons in the elements outer energy level?
electron dot diagram
Is the chemical symbol for the element surrounded by as many dots as there are electrons in its outer energy level?
I had a science question that asked: An electron ______ is the chemical symbol for the element surrounded by as many dots as there are electrons in its outer energy level. That is pretty much the same as yours. I put dot diagram... Meaning electron dot diagram
What is an electron in an atoms outer most energy level?
The electrons on the outtermost energy level of an atom is called a valence electron.
What is the name of the electron located in the outer most energy level?
The Valence electron
What Represents The Electrons In The Outer Energy Of An Element?
Electron Dot Diagram
What is the outer energy level for the atom having the electron configuration of 1s22s22p63s23p64s23d104p6?
The outer energy level for an atom is determined by the highest principal quantum number, n. In this case, the highest n value in the electron configuration is 4. Therefore, the outer energy level is the fourth energy level.
What atoms have two outer level electron?
Energy levels
