I understand that an Ionic bond gives one or more electrons and a Covalent bond shares electrons. My question is what detirmes when electrons are share or given away.
2007-05-21 07:01:09 · 9 answers · asked by Alex V 1 in Science & Mathematics ➔ Chemistry
When two atoms are attracted to each other, the attraction is between the nucleus of each atom and the electron cloud of the other atom. If there is a large difference in the force of attraction that each atom exerts, then one atom will pull the electron(s) away from the other atom forming a positive ion and an negative ion. The attraction between the oppositely charged ions is called an ionic bond.
If the difference in the forces of attraction is not large enough to pull the electrons away from one atom, then the two atoms will attract the electrons and will be held together by this attraction for a pair(s) of electrons.This simultaneous attraction for an electron pair is a covalent bond.
You can use the electronegativity of the atoms to decide when an ionic bond or covalent bond is formed. If the difference in the electronegativities is greater than 1.7, then an ionic bond is formed. If the difference in the electronegativities is 1.7 or less, then a covalent bond is formed.
2007-05-21 07:40:18 · answer #1 · answered by Anonymous · 1⤊ 1⤋
easily, each and every bond is in area ionic and in area covalent as a results of fact electrons are consistently shared a minimum of slightly (it relatively is a question of ways lots relative time the electron spends with each and each nucleus), yet it relatively is in all possibility previous the scope of your question. you ought to appear on the version in negativities. If there's a huge distinction in electronegativity between the two atoms (like, say, Na and F), the bond is ionic. If there's a small distinction (like C and H), it relatively is covalent. there is not any difficult and quickly rule for what the cutoff is between covalent and ionic bonds, regardless of the shown fact that this is often ordinary that bonds with electronegativity ameliorations > a million.fifty 4 are ionic, as a results of fact the Si-O bond has a a million.fifty 4 distinction and this is approximately 50% ionic, 50% covalent.
2016-11-04 21:37:43 · answer #2 · answered by ? 4 · 0⤊ 0⤋
ionic and covalent bonds are concepts. nature doesn´t give a damn how we call the bonds. as s.o. already said, whether a bond is covalent or ionic is determined by the elctronegativity of the bonded elements. if the difference is big (more than, let´s say 2 units) we have a ionic bond, typical examples are bonds between strong metals (groups I and II) and strong non-metals (groups VI and VII). everything else is considered to be covalent bonds, although there is no discrete line that separates the two.
2007-05-21 07:41:33 · answer #3 · answered by chem_freak 5 · 2⤊ 0⤋
ionic is when there's a charge, + or - from the atoms used, they attract each other to bond, covalent is when the electrons are shared.
2007-05-21 07:09:17 · answer #4 · answered by Anonymous · 0⤊ 1⤋
Hi. Each electron shell 'wants' to have a certain number of electrons. Hydrogen 'wants' two but only has one. Two hydrogen atoms combine into a H2 molecule, each sharing both electrons. Just an example.
2007-05-21 07:06:07 · answer #5 · answered by Cirric 7 · 0⤊ 1⤋
The difference between the two atoms electronegativities determines the bonding type.
2007-05-21 07:11:32 · answer #6 · answered by Lobster 4 · 1⤊ 1⤋
An Ionic bond is between a metal and a nonmetal.
Covalant is between two nonmetals
2007-05-21 07:13:39 · answer #7 · answered by Anonymous · 0⤊ 1⤋
ionic atoms trade outer electrons to fill up their outer shells
Covalent atoms share electrons, filling up their outer shells, and this bond is stronger than ionic
2007-05-21 07:09:04 · answer #8 · answered by xapatheticxkinzx 3 · 0⤊ 1⤋
depends on the atoms used
2007-05-21 07:03:41 · answer #9 · answered by Anonymous · 0⤊ 1⤋