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2) Alkali metal atoms (first column in the Periodic Table) have oxidation number +1, alkaline earth atoms (2nd column) have oxidation number +2.
3) Fluorine always has oxidation number -1. Other halogens (next-to-last column in the periodic table) usually have oxidation number -1, except when they are bonded to oxygen or other halogens, when they can have positive oxidation numbers.
4) Hydrogen has oxidation number +1 except in metal hydrides, such as LiH or CaH2, where Rule #2 takes precedence, and hydrogen has oxidation number -1.
5) Oxygen has oxidation number -2, with two exceptions: In compounds where it is bonded to fluorine, Rule #3 takes precedence, and in compounds with O-O bonds, Rules #2 and #4 take precedence. So, for example, the oxidation number in OF2 is +2, and the oxidation number in peroxides such as H2O2 is -1 (and superoxides, the oxidation number is -1/2)
It is also convenient to know the charge on these common ions:
Nitrate is minus one: NO3-
Hydroxide is minus one: OH-
Sulfate is minus two: SO42-
Carbonate is minus two: CO32-
Phosphate is minus three: PO43-
Ammonium is plus one: NH4+
Wiki User
∙ 13y ago
Wiki User
∙ 8y agoTo determine the atomic number of an atom, one must determine the number of protons. The atomic number is always the same with the number of protons.
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How do scients determine the atomic number of an atom?
the atomic number is determined by the number of protons in a nucleus.
What do the protons of the nucleus of an atom determine?
Number of protons or the atomic number of an atom determines what is the element.
How you can use the atoms mass number and atomic number to determine the number of protons electrons and neutrons in the atom?
The numbers of protons and of electrons in an atom are both the same as the atomic number, and the difference between the mass number and the atomic number is the number of neutrons in the atom.
Which mass number or atomic number determine what element an atom is?
The identity of the element is determined solely by the atomic number, which is the number of protons.
How do scientists determine the number of neutrons and isotopes in an atom?
Atomic mass minus atomic number. This is rather simplified but the atomic mass of an element is the total of all the protons, neutrons, and electrons in an atom. Each proton and neutron has an atomic mass of approximately 1 AMU (atomic mass units) while an electron has an atomic mass of about 0.0005 AMU. So, you don't need to worry about the electrons. The atomic number of an element is simply the number of protons in the atom. So, atomic mass (number of protons and neutrons) minus atomic number (number of protons) equals number of neutrons in an atom.
What does the number of neutrons determine?
they determine the atomic mass of the atom
The number of these will determine it's atomic number?
The atomic number of any atom is determined by the number of protons in the nucleus of the atom.
What determine the atomic number of atom?
The number of protons
How can you determine the number of electrons in a atom?
The atomic number
What do we do to determine the number of neutrons in a atom?
atomic number
How you can determine the number of protons electrons and neutrons an atom has from an atom's mass number and its atomic number?
To determine the number of protons, look at the atomic number. The number of electrons is also the atomic number.To find the number of neutrons subtract the atomic number from the Atomic Mass number.
Is the atomic number determine by the number protons in an atom?
yes...
How do scients determine the atomic number of an atom?
the atomic number is determined by the number of protons in a nucleus.
What do the protons of the nucleus of an atom determine?
Number of protons or the atomic number of an atom determines what is the element.
What does the number of protons in a nucleaus determine of an atom?
The number of protons in the nucleus of an atom determines the atomic number of the element to which the atom belongs.
How do you determine the atomic number of and atom?
balk people always when
How do you determine the number of electrons inone atom of an element?
the number of electrons of an atom is the same as it's atomic number
