http://scienceline.ucsb.edu/getkey.php?key=92 WebBest Answer. 100% (2 ratings) Isotopes have the same number of protons but different numbers …. View the full answer.

Why does matter exist in 3 states (liquids, solid, gas)?

WebReferring to the phase diagram of water in Figure 12.4.2: predict the physical form of a sample of water at 400°C and 150 atm. describe the changes that occur as the sample in part (a) is slowly allowed to cool to −50°C at a constant pressure of 150 atm. Given: phase diagram, temperature, and pressure. Web20 de jul. de 1998 · Helium-4 is unique in having two liquid forms. The normal liquid form is called helium I and exists at temperatures from its … how do add page numbers in word

How can helium exist in three different forms? - Answers

WebHelium is the smallest and the lightest noble gas and one of the most unreactive elements, so it was commonly considered that helium compounds cannot exist at all, or at least under normal conditions. Helium's first ionization energy of 24.57 eV is the highest of any element. Helium has a complete shell of electrons, and in this form the atom does not … Web7 de mai. de 2015 · At this point, the Universe was a little more than a few minutes old, and consisted of three elements: hydrogen, helium, and lithium. The high number of protons in the early Universe made hydrogen by far the dominant element: 95% percent of the atoms in the Universe were hydrogen, 5% were helium, and trace amounts were lithium. WebHelium has the smallest atomic radius of any element, about 0.2 nanometers. So, when it forms and starts moving upward, it can fit through very small pore spaces within the … how many t206 honus wagner cards exist