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Groups 1 and 2 are +1 and +2 respectivelly.. Group 3-12 have variable oxidation numbers - they are the so-called transition metals. Group 14-17 have variable oxidation numbers -even group 18- has- there are a number of different compounds of Xe for example.
Group 1 and 2 have some strange compounds such as Cs11O3 .
A better question might be which group doesn't have variable oxidation numbers!
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∙ 10y ago
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Why do elements in group 2 have an oxidation number of -1?
They do not. The group 2 elements, Be, Mg, Ca etc, have oxidation numbers of +2.
What is the oxidation number for group 2 elements?
Hydrogen has -1 and +1 oxidation numbers. Other elements have +1 only
What is the oxidation state of Ba in reactant?
Barium in group 2 has just two oxidation numbers, 0 in the metal, +2 in its compounds.
How many oxidation numbers in each group?
The maximum oxidation number is theoretically equal to the number of valence electrons. For example the oxidation number of chlorine among different compounds can vary from -1 to +7. An exception for this is fluorine, which only have -1 and 0 as its oxidation numbers.
What is the oxidation number of group 1 elements?
+1 only for all elements (except for hydrogen) hydrogen can have +1 and -1 as their oxidation numbers.
What elements can have variable oxidation numbers are known as known as what group of elements?
Most elements can have more than one oxidation number, but I think you are looking for the transition elements in groups 3 - 12.
Why do elements in group 2 have an oxidation number of -1?
They do not. The group 2 elements, Be, Mg, Ca etc, have oxidation numbers of +2.
What is the oxidation number for group 2 elements?
Hydrogen has -1 and +1 oxidation numbers. Other elements have +1 only
What is the oxidation state of Ba in reactant?
Barium in group 2 has just two oxidation numbers, 0 in the metal, +2 in its compounds.
How many oxidation numbers in each group?
The maximum oxidation number is theoretically equal to the number of valence electrons. For example the oxidation number of chlorine among different compounds can vary from -1 to +7. An exception for this is fluorine, which only have -1 and 0 as its oxidation numbers.
What is the oxidation number of group 1 elements?
+1 only for all elements (except for hydrogen) hydrogen can have +1 and -1 as their oxidation numbers.
What are the oxidation numbers for the metal groups 1A 2A 3A?
Group 1 or alkali metals (+1 oxidation number). Group 2 or alkaline earth metals (+2 oxidation number).
What is a letter used to represent one or more numbers called?
A variable. In computer programming, you can have a single variable for a group of related numbers - in this case, you speak about an array.
What element has -1 as an oxidation number?
The halogens (group 17) have an oxidation number of -1, though the halogens below fluorine can have other oxidation numbers as well. Hydrogen can also have an oxidation number of -1 when it forms hydrides.
Do all elements in a group have the same oxidation numbers?
There is at least one oxidation number shared by all the elements in a periodic table column, but some of the elements may have more than one oxidation number and some of these additional oxidation numbers may not be possible for all the elements in a column.
What is the oxidation number for group 5?
Group5 is belongs to the P block. They shows +3 and +5 numbers.
What is the oxidation number of group 17 elements?
There are some numbers. Every element shows -1 number.
