Whats a HONC Rule?

Question

amd whem u draw a Dot Structure, the dots represents valance electron right?

plz help =]

Answer 1

Introduction:

We learned in class that covalent bonds are formed when electrons are shared between atoms. Hydrogen, for example, can share one pair of electrons with another atom, so we say that it forms one bond. Similarly, oxygen forms two, nitrogen usually forms three, and carbon forms four. (Recall the "HONC" rule...H=1, O=2, N=3, C=4) The ratios of atoms in various molecules are expressed by their chemical formulas. For example, "H2O" represents water, and "C6H12O6" represents glucose.

However, this is only part of the story. In biology, the shape of a molcule is often just as important as its chemical formula. Enzymes and cell surface receptors, for example, need a precise 3-dimensional fit to their substrates, just like a baseball and a well-worn outfielder's glove.

In this investigation we will attempt to construct molecular models of some common substances from biology. In several cases, unusual properties will emerge that couldn't have been predicted from the flat projections that are usually drawn on paper.

Answer 2

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