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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.
What else can I help you with?
What is astatine oxidation number?
Astatine typically exhibits an oxidation state of -1, as it belongs to the halogen group on the periodic table. This means astatine gains one electron to achieve a full valence shell.
What's another word for astatine atomic number 85?
Astatine atomic number 85 is also known as "astatine" - it is a highly radioactive element in the halogen group found on the periodic table.
What is the oxidation number of acetate?
The oxidation number of acetate (CH3COO-) is -1. The carbon atom has an oxidation number of +3, each hydrogen atom has an oxidation number of +1, and the oxygen atoms have an oxidation number of -2.
What is the oxidation number of H2CO2?
The oxidation number of each hydrogen in H2CO2 is +1, while the oxidation number of each carbon in CO2 is +4. This is because hydrogen usually has an oxidation number of +1, and oxygen usually has an oxidation number of -2.
What is the oxidation number of nitrosyl?
The oxidation number of nitrosyl (NO) is +1. Nitrogen typically has an oxidation number of -3, and oxygen typically has an oxidation number of -2. In NO, nitrogen has a -3 oxidation number and oxygen has a -2 oxidation number, leading to an overall oxidation number of +1 for the nitrosyl ion.
What is astatine oxidation number?
Astatine typically exhibits an oxidation state of -1, as it belongs to the halogen group on the periodic table. This means astatine gains one electron to achieve a full valence shell.
Why astatine have different oxidation number?
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
How many neutrons does Astatine 210?
Astatine-210 (At-210) has a mass number of 210. Since Astatine has an atomic number of 85, which indicates the number of protons, you can calculate the number of neutrons by subtracting the atomic number from the mass number: 210 - 85 = 125. Therefore, Astatine-210 has 125 neutrons.
What's another word for astatine atomic number 85?
Astatine atomic number 85 is also known as "astatine" - it is a highly radioactive element in the halogen group found on the periodic table.
Astatine has 85 protons what is the atomic number?
The atomic number is the number of protons, so the atomic number of astatine is 85.
What is the atomic number of astatine?
The atomic number of astatine (At) is 85.The atomic weight of At is 210 grams per mole.See the Web Links to the left of this answer for a periodic table with more information about this element!
How many neutrons and does astatine have?
Each isotope has a different number of neutrons. Number of neutrons = Atomic mass of the astatine isotope - 85
What is the oxidation number of HClO?
Hydrogen's oxidation number is +1.Chlorin's oxidation number is +1.Oxygen's oxidation number is -2.
What is the oxidation number of acetate?
The oxidation number of acetate (CH3COO-) is -1. The carbon atom has an oxidation number of +3, each hydrogen atom has an oxidation number of +1, and the oxygen atoms have an oxidation number of -2.
What is the oxidation number of H2CO2?
The oxidation number of each hydrogen in H2CO2 is +1, while the oxidation number of each carbon in CO2 is +4. This is because hydrogen usually has an oxidation number of +1, and oxygen usually has an oxidation number of -2.
What is the Oxidation number of sand?
Silicon's oxidation number is +4.Oxygen's oxidation number is -2
What is the oxidation number of nitrosyl?
The oxidation number of nitrosyl (NO) is +1. Nitrogen typically has an oxidation number of -3, and oxygen typically has an oxidation number of -2. In NO, nitrogen has a -3 oxidation number and oxygen has a -2 oxidation number, leading to an overall oxidation number of +1 for the nitrosyl ion.
