Element A has an atomic number of 37 while element B has an atomic number of 16.After bonding, the chemical formula is AxBy What is the value of y?
Question
Element A has an atomic number of 37 while element B has an atomic number of 16.After bonding, the chemical formula is AxBy What is the value of y?
Solution
The atomic number of an element represents the number of protons in its nucleus, which also corresponds to the number of electrons in a neutral atom. These electrons are involved in chemical bonding.
Element A, with an atomic number of 37, is Rubidium (Rb). It is in Group 1 of the periodic table, meaning it has 1 valence electron. It tends to lose this electron in order to achieve a stable electron configuration, forming a +1 ion.
Element B, with an atomic number of 16, is Sulfur (S). It is in Group 16 of the periodic table, meaning it has 6 valence electrons. It tends to gain 2 electrons to achieve a stable electron configuration, forming a -2 ion.
In order for the charges to balance in the compound, you need two +1 ions (from element A) for every -2 ion (from element B). Therefore, the chemical formula would be A2B, meaning the value of y in AxBy is 1.
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