How many atoms of oxygen are in one formula unit of Al2(SO4)3? How many atoms are in one mole of gold? How many electrons does aluminum have? How many atoms of C are present in 58.6 g of C_6H_6? How many moles of atoms are there in 6g of Carbon-13?
Why we use a number of antimony-bismuth couples in a thermopile? How many electrons are there in 1C? Write the ground-state electronic configuration of Ag^{47}. Which electronic configuration has the lesser energy and the greater number of unpaired spins: (Kr)4d^95s^1 or (Kr)4d^10?
(Actually, the O-shell could theoretically fit 50 electrons, but there is no known element with this many electrons.) How atoms become ionized Star-forming regions in space like the Orion Nebula pictured here are home to budding stars. Ultraviolet light from these young stars carves a cavity ...
7a). It was found that although the reaction between I0 and Pb0 could happen thermodynamically, a kinetic energy barrier existed in the reaction which made the reaction incomplete. The introduced redox shuttle can effectively transfer electrons in a cyclical manner with the reduction of I0 by ...
Moving down the table, periods are longer because it takes more electrons to fill the larger and more complex outer levels. Related: Periodic table of elements quiz: How many elements can you name in 10 minutes? The columns of the table represent groups, or families, of elements. The ...
(a) Measurement devices are placed on one or more of the slits that do a good job of counting 98% of the electrons that go through, reporting to a conscious observer how many went through slit-A ... interference pattern Gone. Yes. (I'm assuming that by "mea...
They are extremely light, yet stronger than steel and more resilient than diamond. They are nearly unbeatable as heat and electricity conductors. In some cases, they even become superconductors wi ...
Thenoble metalsgold, silver, platinum, palladium, and some other elements do not produce a characteristic flame test color. There are several possible explanations for this, one being that the thermal energy isn't sufficient to excite the electrons of these elements enough to release energy in th...
some electrons scattered here and there at random, and protons all more or less on their own. I started feeling a bit strange, as if there was going to be a change of weather (in fact, it had grown slightly cold), and so I said: "You want to bet we're heading for atoms today?
It's been reported that Glenn Seaborg, 1951 Nobel Laureate in Chemistry, succeeded in transmuting a minute quantity of lead (although he may have started with bismuth, another stable metal often substituted for lead) intogoldin 1980. An earlier report (1972) details an accidental discovery by ...