Give the orbital configuration of the following elements using the s, p, d, f type representation. (Answer format is: 1se2 = 152)
helium, nitrogen, silicon
helium nitrogen silicon

Which statement best describes the he properties of iconic compounds ?

What type of radiation is lead emitting in the following equation? alpha particles beta particles gamma rays

The comparison of the number of atoms in a copper coin the size of a penny with the number of people on earth is made to illustrate which of the following? a. that atoms are indivisible b. that atoms are very small c. that atoms are very large d. that in a copper penny, there is one atom for every person on earth