What is an ion and how do you find the number of shells around an atom?
What is an ion? Plus how do you find the number of shells around an atom?
An ion is a charged atom or molecule. It is charged because the number of electrons do not equal the number of protons in the atom or molecule. An atom can acquire a positive charge or a negative charge depending on whether the number of electrons in an atom is greater or less then the number of protons in the atom.
When an atom is attracted to another atom because it has an unequal number of electrons and protons, the atom is called an ION. If the atom has more electrons than protons, it is a negative ion, or ANION. If it has more protons than electrons,it is a positive ion.
Not all shells hold the same number of electrons. For the first eighteen elements, there are some easy rules. The k-shell only holds two electrons. The l-shell only holds eight electrons. The m-shell only holds eight electrons (for the first eighteen elements). The m-shell can actually hold up to 18 electrons as you move farther along the periodic table. The maximum number of electrons you will find in any shell is 32.
Electron shells make up the electron configuration of an atom. It can be shown that the number of electrons that can reside in a shell is equal to 2n2.
Thats all I can help. Hope that fits!!
Need some help in home works?
Come and visit this site
ask4mytutor
and avail online tutoring services for FREE!!
Starting November 26,2007 Monday
3:00PM to 12:00AM (Pacific Standard Time)
Reply:An ion is an atom with a charge formed by the gain or loss of an electron.
to find the number of shells, you have to simply use the periodic table and count.
the first shell, or valence has 2 electrons. The second valence and so on have 8 in each outer shell.
barber
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment