The atomic number of sodium (na) is 11. the element phosphorous is the fourth element to the right of sodium in the periodic table.

the atomic number of phosphorus is it has zero charge because it has __ electrons.

Hydrogen and helium are both members of?

As a pendulum bob swings back and forth several times, the maximum height it reaches becomes less and less. this is because more and more of the pendulum bob's energy is being transformed into a. heat energy b. kinetic energy c. potential energy d. kinetic energy and potential energy

Consider an insulating crystal, made up of layers of atoms. what form would you expect the temperature dependence of the phonon heat capacity to approach at extremely low temperatures if the interlayer coupling is i)very strong (rigid coupling), and ii) very weak. explain.