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Different sets of numbers have different properties. For example,
The set of counting numbers is closed under addition but not under subtraction.
The set of integers is closed under addition, subtraction and multiplication but not under division.
Rational numbers are closed under all four basic operations of arithmetic, but not for square roots.
A set S is "closed" with respect to operation # if whenever x and y are any two elements of S, then x#y is also in S. y = 0 is excluded for division.
So, the answer depends on what you mean by "number".
Wiki User
∙ 9y ago
Wiki User
∙ 13y agoCommutitave Associative Identical property
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What Shape has no straight lines but has 2 rotation symmetry?
You can imagine any number of shapes that have these properties. A simple shape would be an elipse.You can imagine any number of shapes that have these properties. A simple shape would be an elipse.You can imagine any number of shapes that have these properties. A simple shape would be an elipse.You can imagine any number of shapes that have these properties. A simple shape would be an elipse.
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Any number or decimal number that can be expressed as fraction is rational.
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properties that are number
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Chemical properties depend on electrons.Isotopes of an element have the same number of electrons and different number of neutrons.So they have similar chemical properties and different physical properties.
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The number of protons is equal to atomic number. The periodicity of chemical properties depends on the outermost shell of electrons.
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What does the group number help tell you in columns?
Group number describes the number of valence electrons. It helps in estimating chemical properties of that element.For example-group-1 elements have 1 valence electronThe group number of an element is equal to the number of valence electrons. The number of valence electrons is responsible for the chemical properties. So the chemical properties of the element can be determined by the group number.
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the number of electrons that fill the outer shell
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