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☆☆☆☆☆Ra and Ac
Pu and Th
Am and U
Entropy
ionic
similar chemical properties and characteristics
False
shell
radioactive
- The lines below are perpendicular. If the slope of the green line is -1, what is the slope of the red line?
If substance x decays by emitting 100% gas which escapes leaving no residues, then the half-life is half the time elapsed since noon Tuesday
If substance x contains some components which decay by say, K capture (the nucleus captures one of its orbiting electrons) with practically no change in mass, then the picture is complicated because it may have a short half-life, not detectable by weighing.
For this reason half-life is not determined or defined by weight. It is defined by the proportion of the original atomic species which remains after some interval of time, possibly determined by, say, chemical or spectroscopic analysis.
233.15 K is -40 deg F or -40 deg C (the latter two are the same).
So, to the nearest whole degree, 233K would be equal to -40F or -40C
bismuth 210 decays by beta decay to polonium 210 that decays by alpha decay to lead 206
39 APEX
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