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What is the number of valance of halogens?
Seven
How many valance electrons does halogen have?
Halogens are group 17 elements. They have 7 valence electrons.
What terms describe the most reactive nonmetals that have seven valance electrons?
Halogens
How can the number of valence electrons be determined from the periodic table?
By looking at the group number you can tell how many valance electrons there are ex: Group 1= 1 valance electrons Group 2-12= 2 valance electrons Group 13= 3 valance electrons Group 14= 4 valance electrons Group 15= 5 valance electrons Group 16= 6 valance electrons Group 17= 7 valance electrons Group 18= 8 valance electrons
What is the number of valance electrons in oxygen?
six valence electrons
What is the number of valance electrons in sodium?
one
What is the number of valance electrons for germanium?
4
Do any of the halogens have their valance electrons in orbitalsof the same level?
In general, the electronic structure of the valence electrons of halogens is given by: ns2, np5 where n is the period in which the halogen is found. Since the valence electrons are found in both s and p orbitals which have slightly different energies, the valence electrons of halogens are not in orbitals of the same energy level.
How many valence electrons does an atom of any halogen have?
A halogen is located in group 17 of the periodic table, so the electron configuration for the valance electron would be ns2np5 (n=energy level). So all halogens have 7 valance electrons.
Why are the halogens grouped together in a family?
As they all have seven electrons in their valance shell:- 9fluorine2, 717chlorine2, 8, 735bromine2, 8, 18, 753iodine2, 8, 18, 18, 785astatine2, 8, 18, 32, 18, 7 They all are electronegative too.
What group or family has elements with 7 valence electrons?
The family containing 7 valance electrons is called the Halogens. They are all called (in order of increasing valance electrons): Alkali Metals(1), Alkaline Earth Metals(2), Boron Group(3), Carbon Group(4), Nitrogen Group(5), Oxygen Group/Chalcogens(6), Halogens(7), and Noble Gasses(8/full).
How can the number of core electrons be detemined from the periodic table?
Take carbon as an example.Carbon, indicated by it's atomic number, has 6 electrons. The number at the top of carbon's group is the number of valance electrons. Carbon has 4 valance elections.6 total electrons - 4 valance electrons= 2 core electrons in carbon=====================(try another element yourself to see this process )
