So what answer should you give for this class? Because this is a biology class, you should say that covalent bonds are stronger than ionic bonds because they act stronger in aqueous solutions. Atoms normally have an equal number of protons positive charge and electrons negative charge. This means that atoms are normally uncharged because the number of positively charged particles equals the number of negatively charged particles.
When an atom does not contain equal numbers of protons and electrons, it will have a net charge. An atom with a net charge is called an ion. Positive ions are formed by losing electrons. Negative ions are formed by gaining electrons. Atoms can lose and donate electrons in order to become more stable. When an element donates an electron from its outer shell, as in the sodium atom example above, a positive ion is formed Figure 2. The element accepting the electron is now negatively charged.
Because positive and negative charges attract, these ions stay together and form an ionic bond , or a bond between ions. The elements bond together with the electron from one element staying predominantly with the other element. When Na and Cl combine to produce NaCl, an electron from a sodium atom goes to stay with the other seven electrons in the chlorine atom, forming a positively charged sodium ion and a negatively charged chlorine ion.
The sodium and chloride ions attract each other. Ionic and covalent bonds are strong bonds that require considerable energy to break. However, not all bonds between elements are ionic or covalent bonds. Weaker bonds can also form. These are attractions that occur between positive and negative charges that do not require much energy to break. Two weak bonds that occur frequently are hydrogen bonds and van der Waals interactions.
These bonds give rise to the unique properties of water and the unique structures of DNA and proteins. When polar covalent bonds containing a hydrogen atom form, the hydrogen atom in that bond has a slightly positive charge. This is because the shared electron is pulled more strongly toward the other element and away from the hydrogen nucleus. This interaction is called a hydrogen bond. In our description of ionic bonding, we will explore the questions of what determines the bond length and bond strength of an ionic bond.
We will show that bonds form at particular distances even though the attraction between oppositely charged ions increases strongly with decreasing distance. The opposing strong internuclear repulsion maintains the separation between ions. Bond strength, it will be shown, depends mostly on the charges present on each ion and the distance between them. Re: Ionic vs Covalent Post by Mellanie Gamero 4D » Tue Oct 01, pm Ionic bonds are stronger than covalent bonds due to the fact that they involve the transfer of electrons rather than an equal sharing of electrons, which occurs within covalent bonds, and usually, more energy is required to dissociate ionic bonds.
Re: Ionic vs Covalent Post by » Tue Oct 01, pm covalent network are the strongest ex. Re: Ionic vs Covalent Post by saigorijavolu2k » Tue Oct 01, pm Most often Ionic bonds are stronger than covalent bonds; however, there are some covalent bonds stronger than ionic.
Ionic bonds are formed as a result of a mutual attraction between ions that have opposite charges. Covalent bonds are formed as a result of the sharing of electrons. Ionic bonds are stronger because of coulombic attraction. Re: Ionic vs Covalent Post by CynthiaLy4F » Tue Oct 01, pm Ionic bonds are stronger than covalent bonds, because there is a stronger attraction between ions that have opposite charges, which is why it takes a lot of energy to separate them.
Covalent bonds are bonds that involve the sharing of electron pairs between atoms. It depends on the interactions between the atoms that causes the differences. Re: Ionic vs Covalent Post by Jacey Yang 1F » Thu Oct 03, pm Ionic bonds are stronger than covalent bonds, but when dissolved in water, they become much weaker because ions separate and are surrounded by water molecules. Does anyone know if polarity affects bond strength?
If so, how? However, since molecules with ionic bonds can be dissolved in water, covalent bonds are stronger in water than ionic bonds. But covalent bonds are stronger than ionic bonds in water. Re: Ionic vs Covalent Post by Ryan 1K » Mon Oct 07, am wrote: wrote: covalent network are the strongest ex.
Re: Ionic vs Covalent Post by Katherine Brenner 3H » Tue Oct 08, pm It should be noted that water can weaken an ionic bond so in that case a covalent bond may be stronger. Re: Ionic vs Covalent Post by Ying Yan 1F » Sat Oct 12, am Ionic bonds are much stronger since electrons from one atom is given to another and the two atoms basically are glued together through the bond.
However, in water, ionic bonds are weaker.
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