To draw a Lewis structure for a covalent compound, begin by calculating A, the available electrons, and N, the needed electrons.
what is N for silicon tetrachloride, SiCl4

( I know that the available amount is 32 but I can't figure out the needed amount)

Identify one disadvantage to each of the following models of electron configuration: -dot structures -arrow and line diagrams -written electron configurations type in your answer below. (answer) -dot structures do not show the distribution of electrons in orbitals and take up a lot of space. -arrow and line diagrams take up a lot of space and make it difficult to count electrons. -written configurations make it easy to lose count of electrons and do not show the distribution of electrons in orbitals.

3) in peaches, [oh]=3.16x10-11 m a) find [h+ ] b) what is the ph? c) is the solution acidic, basic, or neutral?

The chemical bond connecting one nucleotide with the next one along the nucleic acid chain is called a