Chemistry Essay Example | Topics and Well Written Essays - 500 words - 1

Chemistry - Essay ExampleAluminium is metallic element with atomic human body 13 and it will combine by loosing two electrons. Beryllium and aluminium atomic come up 18 metals and will combine with other elements by loosing electrons while oxygen will combine by gaining electrons, therefore our empirical formula will have the following formulaIsotopes of an element have the same number of protons but differ in the number of neutrons the atomic number is equal to the number of protons therefore Pn has the atomic number 117. Because atoms are neutral then the number of electrons is equal to the number of neutrons.The atomic number is 117 this representation that the electronic arrangement is 2 81832507 this is given by the formula 2N2 which give us the maximum number of electrons in each cell where N is the remonstrate number. We have 6 shells and 7 electrons in the last shell, this center that the element belongs to the 7th period and the seventeenth group.The empirical formul a will be Pn2O7 because oxygen will tend to gain two electrons or loose 6 electrons and Pn will also tend to gain one electron or loose 7 electrons, therefore the highest normal oxide will be loosing Pn loosing seven electrons and Oxygen gaining two electrons.Six decays means loosing six neutrons, and bearing in mind that the number of neutrons is equal to the number of electrons and that the number of electrons is equal to the number of protons then our resulting element will have an atomic number 67-6 = 61.