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The Elements
This is a book by Theodore Gray(copyright 2009), in it are multiple errors even I the idiot can pick out for one it shows coppers melting point to be below 0 on it's temperature scale, second it list technetium and promethium as the 2 exceptions to the fact that all elements [U]below[/U] bismuth are stable but they both have atomic numbers< bismuth hence they are above it.
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[quote=science_man_88;222633]second it list technetium and promethium as the 2 exceptions to the fact that all elements [U]below[/U] bismuth are stable but they both have atomic numbers< bismuth hence they are above it.[/quote]The book is correct there. Perhaps you have confused the meanings of "below" and "above" in this context.
"Below" in this context means having a lesser atomic number, not being vertically farther "down" on the two-dimensional periodic table in the orientation with which it's usually displayed. Hydrogen is "below" every other element. |
that phrasing should be abolished I think as it never got told that was it in any chemistry class I ever took.
what about the copper melting below 0 Celsius ? according to Wikipedia it melts at over 1000 Celsius and that's quite a big lie if the book is accurate. |
Most people don't need Wikipedia to check that copper melts above 0 Celsius.
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[QUOTE=10metreh;222660]Most people don't need Wikipedia to check that copper melts above 0 Celsius.[/QUOTE]
I didn't either but I just give references that show above 0 is accurate but below is crazy unless it's at a high pressure. |
Can I guess that it says the melting point is -38.83 °C? Possibly mixed up with mercury.
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1 Attachment(s)
[QUOTE=retina;222662]Can I guess that it says the melting point is -38.83 °C? Possibly mixed up with mercury.[/QUOTE]
I can't tell it shows it in a scale on the side with 500 degree increments marked. looks to me like 91 K but that's only a guess. |
[QUOTE=science_man_88;222661]I didn't either but I just give references that show above 0 is accurate but below is crazy unless it's at a high pressure.[/QUOTE]
There is a basic error in this statement. I leave it to you to find it. |
if it's punctuation I don't care almost nobody I know does everything accurately.
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[QUOTE=science_man_88;222669]if it's punctuation I don't care almost nobody I know does everything accurately.[/QUOTE]
No, it's not punctuation, spelling or grammar. |
very low pressure maybe?
remember.. water boil at 95 °C high in the mountain |
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