How many protons does argon have? How many valence electrons does protactinium have? How many valence electrons does darmstadtium have? How many valence electrons does hassium have? How many valence electrons does einsteinium have? How many valence shell electrons does an atom of indium have?
True or false? If lithium has an atomic number of 3, then it will have 1 valence electron. Given that nitrogen has an atomic number of 7, how many protons, neutrons, and electrons are expected in the typical nitrogen atom? Based on the octet rule you would expect a carbon...
Electrons have very little mass compared to protons and neutrons, and they move very fast in their orbits. The orbits are not circular paths, but rather regions of space where the electrons are most likely to be found. These regions are called orbitals or subshells, and they have different ...
Protons have a positive charge, neutrons have a neutral charge, and electrons have a negative charge. Note that the atoms themselves can carry a positive or a negative charge. How? By gaining or losing electrons. The flow of electrons between atoms is what we call electricity. Since our bodi...
Since all three types of cars have many of the same components (tires,transmissions, et cetera), we'll ignore that part of the car and compare efficiencies up to the point where mechanical power is generated. Let's start with the fuel cell car. (All of these efficiencies are approximations...
A beryllium-7 atom captures an electron to become lithium-7 atom (three protons and four neutrons) and a neutrino. The lithium-7 combines with a proton to form two helium-4 atoms. The helium-4 atoms are less massive than the two hydrogen atoms that started the process, so the differ...
A beryllium-7 atom captures an electron to become lithium-7 atom (three protons and four neutrons) and a neutrino. The lithium-7 combines with a proton to form two helium-4 atoms. The helium-4 atoms are less massive than the two hydrogen atoms that started the process, so the differ...
Many, including Tesla, Inc. CEO Elon Musk, have been evangelical about the potentials of lithium batteries, pouring millions into mining and manufacturing operations in hopes of mastering this scarce resource. But a persistent, long-standing fringe have a different obsession. And this time,...
Every atom is made of a nucleus of protons and neutrons surrounded by a number of “shells” containing electrons. While the electrons near the nucleus have strong force of attraction, the electrons farthest away in what’s known as the “valence shell” have a much weaker one. ...
the n = 4 level of Li++ (doubly ionized lithium) How does the energy of an electron change when the electron moves closer to the nucleus? The image below shows the wave function of an electron in a rigid box. The electron energy is 18.3 eV. ...