A substance made of two or more elements that have been chemically combined is a(n) ______.
2 answers:
Answer: Compound
Explanation:
Element is a pure substance which is composed of atoms of similar elements. Example:
Compound is a pure substance which is made from atoms of different elements combined together in a fixed ratio by mass. Example:
Mixtures are heterogeneous materials as they do not have uniform composition and the components are not evenly distributed throughout the material. Example: Sugar solution
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Here we have to get the spin of the other electron present in a orbital which already have an electron which has clockwise spin.
The electron will have anti-clockwise notation.
We know from the Pauli exclusion principle, no two electrons in an atom can have all the four quantum numbers i.e. principal quantum number (n), azimuthal quantum number (l), magnetic quantum number (m) and spin quantum number (s) same. The importance of the principle also restrict the possible number of electrons may be present in a particular orbital.
Let assume for an 1s orbital the possible values of four quantum numbers are n = 1, l = 0, m = 0 and s = .
The exclusion principle at once tells us that there may be only two unique sets of these quantum numbers:
1, 0, 0, + and 1, 0, 0, -
.
Thus if one electron in an orbital has clockwise spin the other electron will must be have anti-clockwise spin.