if an element [x] contains 8 protons, 8 neutrons and 8 electrons, the atomic number of the element is ?

For each of the compounds below, show that the charges on the ions add up to zero. a. kbr b. cao c. li(2)o d. cacl(2) e. alcl(3)

Great amounts of electromagnetic energy from our sun and other bodies in space travel through space. which is a logical conclusion about these electromagnetic waves? their energy must be very their frequency must be very low these waves can travel without a medium they only travel through a vacuum of space

The number to the right of an element's symbol (ex. c-12) identifies the of an isotope.