Astatine has a valency of 1, because it is in group 7 and is part of the halogens. They say the group number is the number of valence, but the valency can't be 7. So they do 8 (the number of total outer shells allowed) - the group number if it's above 4.
8 - 7 = 1.
And all the other halogens, in group 7 like fluorine, chlorine, bromine and iodine have a valence of 1.
All in all, Astatine has a valency of 1.
The valence of astatine is -1.
7,5,3,+1,-1
Astaine is monovalent: 1.
No other name for astatine.
oxidation number of I is -1. oxidation number of F is +1.
Astatine is an element in the periodic table, belonging to group 7.It has an atomic number of 85.
Zn has oxidation number +2; S has oxidation number -2
Astaine is monovalent: 1.
Different from what? Very little is known about the chemistry of astatine - it is radioactive and the most stable isotope has a half life of 7-8 hrs! As far as is known and that isn't far- astatine is most like iodine with ONs presumably of -1, 1, 3, 5, 7
The atomic number is the number of protons, so the atomic number of astatine is 85.
No other name for astatine.
Each isotope has a different number of neutrons. Number of neutrons = Atomic mass of the astatine isotope - 85
oxidation number of I is -1. oxidation number of F is +1.
Hydrogen's oxidation number is +1.Chlorin's oxidation number is +1.Oxygen's oxidation number is -2.
Astatine is an element in the periodic table, belonging to group 7.It has an atomic number of 85.
Zn has oxidation number +2; S has oxidation number -2
Silicon's oxidation number is +4.Oxygen's oxidation number is -2
The oxidation number for H is +1, and the oxidation number for O is -1.
Oxidation number of Si is +4.Oxidation number of O is -2.