Give one hazard of using sodium hydroxide, and state how to reduce the risks from this hazard.

Which type of orbits are found in the principal energy level n = 2 a - s b - s, f c - s, d d - s, p e - s, p, d

In the cathode ray tube experiment, j. j. thomson passed an electric current through different gases inside a cathode ray tube in the presence of an electric field. in which two ways did this experiment change scientists’ understanding of the atom?

Identify arrows pointing to bonding electrons. done h-0-0-h ) intro