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What elements has 2 main energy levels and seven valence electrons?
Wiki User
∙ 11y ago
Alkaline earth elements have two valence electrons
Those are the alkaline earth metals, technically referred to as Group 2. They are beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba) and radium (Ra). Radium has two valence electrons and is in Group 2, but is sometimes left off lists of the alkaline earth metals because it is radioactive.
- Soccer_Fanatic18
Wiki User
∙ 13y ago
Wiki User
∙ 8y agoWiki User
∙ 11y agoit is 3 thought 13
Wiki User
∙ 14y agoit should be the alkaline earth metals
Wiki User
∙ 14y agoThe alkaline earth metals
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∙ 10y agogroup 2 elements (alkaline earth metals)
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How many valence electrons are on the first 3 energy levels?
The first energy level has a maximum of two valence electrons. The second and third energy levels have a maximum of 8 valence electrons.
How many valence electrons does a neutral Be atom have?
It depends on the atom.Atoms may have up to three energy levels, or layers of electrons, although some elements, such as helium, have only one. If an atom has one energy level, its valence electrons may total up to only two. If it has two or three energy levels, It may have up to eight total valence electrons. An atom is neutral when it has the greatest possible number of electrons.
What are the valence electrons in an atom?
located in the outermost energy levels.
What is the number of protons in the nucleus or the number the electrons in the energy levels called?
valence electrons
Which elements have the same energy levels of aluminum?
Aluminum has it's valence electrons in the 3rd energy level. Others that also have valence electrons in n=3 would be Na, Mg, Si, P, S, and Cl. Argon also has a filled 3rd level.
What element has 3 valence electrons and 3 energy levels?
What has three energy levels and six valence electrons
What element has 3 energy levels and 3 valence electrons?
What has three energy levels and six valence electrons
How many valence electrons are on the first 3 energy levels?
The first energy level has a maximum of two valence electrons. The second and third energy levels have a maximum of 8 valence electrons.
What are electrons in the outer unfilled energy levels called?
Valence electrons
What can you predict from an elements place in th periodic table?
its valence electrons, its number of energy levels, how reactive it is, and some properties it has
How many valence electrons does a neutral Be atom have?
It depends on the atom.Atoms may have up to three energy levels, or layers of electrons, although some elements, such as helium, have only one. If an atom has one energy level, its valence electrons may total up to only two. If it has two or three energy levels, It may have up to eight total valence electrons. An atom is neutral when it has the greatest possible number of electrons.
What are the valence electrons in an atom?
located in the outermost energy levels.
Outer shell electrons is known as?
The outer shell is called the valence shell
What atoms have seven electrons in their outermost energy levels?
All halogens (fluorine, chlorine, bromine, iodine and astatine) have 7 valence electrons.
What is the number of protons in the nucleus or the number the electrons in the energy levels called?
valence electrons
How does the number of electrons in energy levels affect bond formation?
Chemical bonding is occurred from the participation of valence electrons. Valence electrons are located in the topmost energy level of an atom.
What is an element with 7 valence electrons and 4 energy levels?
neutrons
