But after a few billion years, something fishy begins to occur. Instead of approaching zero, the expansion rate starts to decrease at a slower rate than one would expect, and a distant galaxy’s recession speed doesn’t drop in the same fashion anymore. Once the Universe reaches an age tha...
In contrast to the data with a silicon target, the interaction radius at which electron promotion occurs does not decrease with projectile atomic number (Z1) as it should if promotion occurs at a definite level crossing. In addition, the yields of doubly charged ions do not follow the Z1...
Does the periodic trend of metallic character increase or decrease from top to bottom? As the elements of Group 1 on the periodic table are considered in order of increasing atomic radius, the ionization energy of each successive element generally: a. incre...
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Why does the thermal stability decrease across the period in s-block elements? Why don't electrons in atoms repel? Why does higher temperature weaken bonds? Explain why an increase in electrons results in an increase in boiling point. Explain how shielding contributes to the atomic radius trend...