Choosing Young Childrens Videos

Childrens videos - really how much of a choice is there? Young children are at the peak of their learning capability and are impressionable. Loving parents want their children to learn how to function well in life free of ruinous influences. Parental oversight needs to begin in a child’s formative years, beginning even before they reach the end of their first year. Times have changed; a major component of a child’s exposure relates, not simply to the television, but to the computer. Television offers as a package deal chunks of video viewing, often a half-hour or more. Computer childrens videos are often a few minutes in length. They thus offer a greater opportunity for the parent to be selective in what the child watches. Childrens Videos Among the standard video…
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The Aromatic Cyclopentadienyl Anion

Chemistry, Education
[caption id="attachment_16480" align="alignright" width="440"] Cyclopentadienyl Anion[/caption] Is it possible that for an ion to be aromatic? Yes. Consider the aromatic cyclopentadienyl anion. Hückel’s Rule dictates a flat ring with 4n + 2 π (pi) conjugated electrons. The smallest neutral ring with these qualifications has n = 1. It is benzene (C₆H₆). But Hückel’s law does not require an electronically neutral structure. The smallest aromatic ion is the cyclopropenyl cation¹ (C₃H₃⁺). Is there a negative ion that has 6 π electrons and is aromatic? The answer is yes. The aromatic cyclopentadienyl anion (C₅H₅⁻). Neutral Cyclopentadiene Neutral cyclopentadiene is flat. It is pentagon shaped. Three of the carbon-carbon bonds are single bonds. The other two are double bonds. At each of the four ends of the two double bonds there is one…
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