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Ok, i got a HUGE test tomarrow in science, chapter exam... huge part of my grade... and unfortionatly i waited till today to study for it. NEED HELP!!! How do I know wat the charge that an atom (Calcium ,Neon, Oxygen) will have if the atom becomes stable? Another question is wat are the "number of Ocupied Energy Levels" in an atom? I will proble have more questions as i continue studing, but that is all i need for now... PLEASE ANCER!!! thanks!!!

2006-09-21 10:51:18 · 2 answers · asked by Benjamin H 1 in Science & Mathematics Physics

2 answers

In addition to mass, subatomic particles also have charges. Electrons have a charge of negative one, and protons have a charge of positive one. These positive and negative charges are opposite and exactly equal in strength. For this reason, an atom with one electron and one proton has no net charge. The +1 charge of the proton and the -1 charge of the electron cancel each other out. Neutrons, as their name suggests, are neutral, or uncharged particles. Neutrons contribute mass, but no charge to an atom.

Just like the poles of magnets, the opposite charges on protons and electrons attract one another. This weak nuclear force helps hold the electrons near the nucleus of the atom. You may wonder how all the positively charged protons could possibly exist close together in the nucleus. The protons are of like charge, so why don't the positive charges repel each other? The answer lies in a second fundamental force, called the strong nuclear force.

Atoms of elements must always have the same number of electrons and protons or the elements would be highly reactive and very unstable. If an atom has an unequal number of electrons or protons, it is an ion. Ions can exist only when surrounded by other ions of opposite charge.

You have to work on your spelling dear.

2006-09-22 03:42:22 · answer #1 · answered by Just enquiring/ inquiring 4 · 0 0

The observe stable isn't helpfull i'm afraid. What you assert interior the third paragraph is on the component of the actuality. All atoms/ions want an entire outer shell, to try this sodium needs to lose an electron and alter into Na+ it may try this via forming an ionic bond with a team 7 component like chlorine. with a bit of luck you will perform a little experiments the place you look at team one metals at GCSE, you will see that from sodiums reactions with water it is not what you would be able to call "stable", NaCl is the optimum constituent of table salt although and is greater "stable" yet once you dissolve it there are nonetheless some reactions it may take part in. in terms of the final tip you ask for the style of electrons in an components outer shell is the comparable simply by fact the gang it fairly is in (it fairly is authentic for the 1st 20 components untill the transition metals start up yet you purely subject with regard to the 1st 20 at GCSE, a minimum of you probably did 2 years in the past as quickly as I did it, the sole different exception is helium. It has 2 electrons in its outer shell yet simply by fact it fairly is the 1st shell and is for this reason finished it fairly is many times recognised as inert (or maybe stable :-P) and so is put in the comparable team simply by fact the noble gases.

2016-12-15 11:57:04 · answer #2 · answered by ? 4 · 0 0

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