The options are: A) ^75Br^-1B)^77Y^-1 C)^16N^3- D)^25Al^+3 And can you explain to me how you got the answer? Thank you! (:
Unless the manufacturer gave you a certification that says it met the critieria for insulation, it won't countsome window films qualified, but faux wood blinds inside your house would not.
A) Atomic number for Bromine (Br) 35, therefore it has a total of 40 neutrons (75-35)In the neutral state it has 35 electrons, and since it has gained an electron, it has 36 electronsThus they do not have the same amount of neutrons and electronsB) Atomic number for Yttrium (Y) 39, therefore it has a total of 38 neutrons (77-39)In the neutral state it has 39 electrons, and since it has lost an electron, it has 38 electronsThus they do have the same amount of neutrons and electronsC) Atomic number for Nitrogen (N) 7, therefore it has a total of 9 neutrons (16-7)In the neutral state, it has 7 electrons, and since it has gained 3 electrons, it has 10 electronsThus they do not have the same amount of neutrons and electronsD) Atomic number for Aluminium (Al) 13, therefore it has a total of 12 neutrons (25-13)In the neutral state, it has 13 electrons, and since it has lost 3 electrons, it has 10 electronsThus they do not have the same amount of neutrons and electrons.
