2007-03-23 16:35:58 · 6 answers · asked by Lizzie 5 in Science & Mathematics ➔ Physics
You just have to have a periodic table in front of you. Also, you need to look at the electronegativities of all the atoms. For example, a bond is usually ionic if the differen ce of the electronegativities of the two elements is above 2 (or 2.5?).
Also, usually, ionic bonds happen between a metal and a nonmetal.
That means two elements from different sides of the periodic table, like Na and Cl. (NaCl)
Covalent bonds usually form between two nonmetals, or two elements from the right side of the periodic table, like Boron and Fluoride. (BF3)
2007-03-23 16:42:57 · answer #1 · answered by Lilovacookedrice 3 · 0⤊ 0⤋
a bond between two atoms is never completely ionic or covalent. if the difference in electronegetivities is more than 2 it can be almost an ionic bond.
Generally the more electronegetive atom develops a partial negetive acharge and the less one a partial positive charge.
this happens in covalent bonds also.
2007-03-24 01:13:17 · answer #2 · answered by khyatesh_chavan2000 1 · 0⤊ 0⤋
ionic bonds are formed between two oppositely charged ions. This will happen most often between a metal and a non-metal, such as sodium, Na, and chlorine, Cl. These types of bonds will most likely form salts, like NaCl or LiF. Covalent bonds share electrons, therfore they must be of the same charge. Covalent bonds will be between two similar elements, i.e. two metals, or two non-metals, CH4.
2007-03-23 23:48:28 · answer #3 · answered by skibum1530 1 · 0⤊ 0⤋
ionic bond is always is soluble in water and insoluble in organic solvents{h2s} . while covalent is insoluble in water and soluble in organic solvents. Example NH3
NH3 +H2S - H2O + NO2 + S
also ionic bonds being charged in molten or solution state allows passage of electricity and while covalent are not charged thus electricity doesnt pass.
also ionic bonds particles are high attracted to each other thus they tey require high melting and boiling point. while for covalent its just the reverse.
2007-03-24 01:40:21 · answer #4 · answered by Jay V 1 · 0⤊ 0⤋
Ionic bonds are nonmetals and metals, covalent bonds are all metals. (I never used the number thing, and I was always right.) lol... hope it helps
2007-03-23 23:49:21 · answer #5 · answered by Neonkttie 3 · 0⤊ 0⤋
Yes and we do all the time. Ask a chemist, they will tell you all about it. In fact, that is all they do.
2007-03-23 23:47:34 · answer #6 · answered by msi_cord 7 · 0⤊ 1⤋