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For gases, departure from 3 R per mole of atoms is generally due to two factors: (1) failure of the higher quantum-energy-spaced vibration modes in gas molecules to be excited at room temperature, and (2) loss of potential energy degree of freedom for small gas molecules, simply because most of their atoms are not bonded maximally in space to ...
In the following years, the energy was further constrained to 3.5 ± 1.0 eV, which was for a long time the accepted energy value. [ 34 ] Improved gamma ray spectroscopy measurements using an advanced high-resolution X-ray microcalorimeter were carried out in 2007, yielding a new value for the transition energy of 7.6 ± 0.5 eV , [ 35 ...
The simplest of the cyclopentadienyls are Th(C 5 H 5) 3 and Th(C 5 H 5) 4: many derivatives are known. The former (which has two forms, one purple and one green) [ 72 ] is a rare example of thorium in the formal +3 oxidation state; [ 73 ] a formal +2 oxidation state occurs in a derivative. [ 74 ]
A military police officer has been arrested in Brazil after a video emerged of him throwing a civilian over a bridge in Sao Paulo on Monday, sparking protests in the city.
Police in the Canadian capital of Ottawa say they have arrested and charged a suspect in the deadly stabbing of Christopher Smith in 1996.
The man accused of setting fire to a woman who was asleep on a New York City subway has been indicted on charges of murder in the first and second degree and arson, according to Brooklyn District ...
All of the remaining radioactive isotopes have half-lives less than 1.6 days, and the majority of these have half-lives less than 1.8 seconds. This element also has five meta states , 217m Pa (t 1/2 1.15 milliseconds), 220m1 Pa (t 1/2 = 308 nanoseconds), 220m2 Pa (t 1/2 = 69 nanoseconds), 229m Pa (t 1/2 = 420 nanoseconds), and 234m Pa (t 1/2 ...
Police identified four of the dead as two men aged 45 and 31, a 41-year-old woman, and a 17-year-old girl. Four other people are in hospital, two in a serious condition.