In what two places does the energy 1.9 electronvolts show up?
824626
in a land far far away
879425
Only sigma orbitals show sp mixing.  Generally, when there is a difference of less than ~15 eV between the s and p orbitals you get sp mixing.
843857
Should be D...\n\nPeriodic trend of Ionization energy is the same as electronegativity. Increases going Top Right. Compared to Lithium we can't tell which one takes preference, but since we're considering Mg+, it already had it's first electron removed. In this problem we are looking at second ionization energy. Second electron is always much harder to remove than the first one, so second IE (ionization energy) is always much greater than first IE.  A is false.\n\nElectron affinity is the energy required to add an electron to an atom. Ionization is the energy required to take away an electron from an atom. So they are equal and opposite in sign, but we have to look at the equations of electron addition and removal.\n\nMg+-->Mg(2+) + e- (Removal, Ionization Energy)\nMg(2+) + e- -->Mg+ (Addition, Electron Affinity)\n\nThe equations are just reversed, so by Hess's Law Ionization energy of Mg+ is equal to and opposite in sign from Electron affinity of Mg(2+)
616769
9.109 3826(16) × 10−31 kg (Kilograms)\n1⁄1836.152 672 61(85) amu  (Atomic mass units) \n0.510 998 918(44) MeV/c2 (Mega electonvolts/coloumb squared)
893341
well if i am not wrong.. they work on the principle of thermionic emission... \n\nnow wat happens is ... at the cathode end ( negatively charged) there is a metal bit.. called emitter  and at the anode end( positive terminal) another metal called the receiver. the tube is vacuated and filled with gas, in this case a halogen vapour. \n\nwat happens is when a potential is applied, when we switch it on, the cathode emits electrons.\nthese electrons pass thru the vapours and ionise them. when ionised these gases emit energy in the form of light..\n\nthis is the explanation in the most condensed form... equations make it complicated for understanding... \n\nhope i did justice to ur query
627895
When an electron goes from lower energy orbital to higher energy orbital it absorbs energy and when an electron drops from a higher energy orbital to a lower energy orbitaltehn it emits energy.\n\n(a) Emission (read the reason above)\n(b) Absorption (Read reason above)\n(c) Emission (read reason above)\n(d) Absorption (read reason above)
418331
Possibly "statistical fluctuations in charge generation" as mentioned in ref. 1. From ref. 2, which refers to "fundamental limits imposed by charge generation statistics", I get the impression that these variations may be an irreducible error source.
771080
joules is energy...im dumb
918817
I will put it in the order that is easiest to understand.\n\nAmpere: the speed at which electrons pass through\n(1A = 1 coulomb/second, where 1 coulomb is 6.24x10^18 electrons)\n\nWatt: the speed at which work (in joules) is done\n(1W = 1Joule/second. A joule is the amount of work, in Newtons (if you've done physics) x meters,)\n\nVolt:  Watts per Ampere, or Joules per Coulomb\n\nOhm: The RESISTANCE, by Volts per Ampere.
446643
The movement of an electron from one place to another.
938353
When heated the electrons move from the ground state to an exicited state.  They are unstable here and return to the ground state giving off energy in the form of a specific color.  Different energy levels will produce different colors
712147
The way I learned it was that the dots were part of an electron dot diagram.  It showed how many electrons (the little dots) were in the electron cloud of an atom.  I think they were left over after the electron levels were filled in as much as they could be. (Did you learn that?) Here's a link if it wasn't clear: http://en.wikipedia.org/wiki/Electron_dot_diagram
250297
1.Current in the 385.451 V circuit is bigger.\n\nGod is spelled B-I-G B-A-N-G\n\nPBrax@netscape.com
748652
It is either 1 or 3. I electron from the p sub shell and 2 from the s subshell.
1115839
No, the electron's charge is not its energy content, the charge is the charge which is a fundamental quantity (and the same for all electrons.) The volt is not a unit of force, it is a unit of electrical potential, with units of J/C (joules/coulomb). A volt represents a potential difference that will impart one joule of energy to one coulomb of charge passing through it. An electron volt is a unit of energy, defined as the amount of energy imparted to one electron passing through a potential difference of one volt. Since the electron's charge is −1.60217653*10^-19 C, the energy so imparted is equal to 1.60217653*10^-19 J.
52468
it is the charge of an electron 1.602*10^-19 Coulombs, i think that is what you are referring to.
63880
It is the energy possessed by a moving electron through a potential difference of 1 volt.\nThis is the unit of energy in atomic Physics.\n2.247x10^25 ev units are equal to 1 kWh.