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Because an example of ionic bonding is making table salt NaCl =D
If you refer to electron pairing, bonding between atoms in chemistry:The single bond is called the covalent bond.
a covalent bond should be present between substances when the difference in their electronegativities is less than around 1.7. however this is a rough guide, as there is no real distinction between covalent and ionic bonds, there are really just increasingly polar covalent bonds. or for a more gcse-level answer, you can expect that covalent bonds should be formed when non-metals react with other non-metals.
The hydrogen bond involves hydrogen in a covalent bond with a highly electronegative element, like oxygen in water. Pure hydrogen H2 involves 2 atoms with exactly the same electronegativity. In water the large difference in electronegativity means that the bond is polar covalent. In addition to that, the hydrogen is not quite, but nearly a point nucleus because there are no other electrons in hydrogen than those shared. This causes a very strong attraction --- not a real bond -- between the hydrogen and the highly negative oxygen in an adjacent molecule. This is the real hydrogen bond, the attraction of the hydrogen for an element in another molecule. Real bonds are within one molecule.
Well!! If by ionic you mean full transfer of electrons from one atom to another then the answer is no. However in real life this is rarely attained. Bonds are said to have covalent or ionic character - this is just another way of saying polar covalent. One analogy is to think of bonding as a spectrum from pure ionic at one end to pure covalent at the other.
Because an example of ionic bonding is making table salt NaCl =D
If you refer to electron pairing, bonding between atoms in chemistry:The single bond is called the covalent bond.
Ionic Bond
a covalent bond should be present between substances when the difference in their electronegativities is less than around 1.7. however this is a rough guide, as there is no real distinction between covalent and ionic bonds, there are really just increasingly polar covalent bonds. or for a more gcse-level answer, you can expect that covalent bonds should be formed when non-metals react with other non-metals.
A fjord is a real world example of a fjord! They exist in the real world.
Ionic and covalent bonds are defined by bond length, and in many real compounds the actual bond length is between the ionic and covalent bond lengths. These bonds can be described as some percentage ionic and some percentage covalent. Si-O (called siloxo) bonds in quartz and opal are mostly covalent. Glass is not mostly covalent because it has alkali fluxes that make it more ionic. Sialate bonds (Si-O-Al-O, where the aluminum has a alkali atom associated with it) are also mostly (but I believe less so) covalent. Source: Linus Pauling's "the nature of the chemical bond"
The Equator is a real world example, being the circumference of the Earth.
Of what?
The hydrogen bond involves hydrogen in a covalent bond with a highly electronegative element, like oxygen in water. Pure hydrogen H2 involves 2 atoms with exactly the same electronegativity. In water the large difference in electronegativity means that the bond is polar covalent. In addition to that, the hydrogen is not quite, but nearly a point nucleus because there are no other electrons in hydrogen than those shared. This causes a very strong attraction --- not a real bond -- between the hydrogen and the highly negative oxygen in an adjacent molecule. This is the real hydrogen bond, the attraction of the hydrogen for an element in another molecule. Real bonds are within one molecule.
where could you find a pentagon in the real world
Example is too omitted to be real. Example is much more unresponsive
Well!! If by ionic you mean full transfer of electrons from one atom to another then the answer is no. However in real life this is rarely attained. Bonds are said to have covalent or ionic character - this is just another way of saying polar covalent. One analogy is to think of bonding as a spectrum from pure ionic at one end to pure covalent at the other.