
Help with Chemistry Please?
What are lone pairs? and how do u figure out the lone pairs of the atoms in these compounds with the stars? H*Br* , H2*S*, *C*H4
How do u figure out the increasing ionic charecter order of the bonds?
Examples: the lithium-to-flourine bond in LiF, the potassium-to-oxygen bond in K2O, the nitrogen-to-nitrogen bond in N2, the sulfer-to-oxygen bond in SO2, the cholrine-to-flourine bond in CaF2
Also, how do you explain why a certain bond is ionic, polar covalent, or covalent? For example, the CC bond in H3CCH3
Lone pairs are electron pairs around an atom, which are not shared with other atoms. Br in H*Br has 3 lone pairs, S in H2*S* has 2 lone pairs, and C in *C*H4 has 0 lone pair.
When two elements with very different electro negativity form a covalent bond the bond is said to be a polar covalent bond. When the metal such as lithium combines with a nonmetal such as Cl; the resulting compound; LiCl; is said to be a ionic compound.
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