The phosphorous anion (p−) has how many total electrons and how many valence electrons? a. 14; 6 b. 16; 5 c. 14; 4 d. 16; 4 e. 15; 5 f. 14; 5 g. 15; 4 h. 15; 6 9. 16; 6

An atom's configuration based on its number of electrons ends at 3p4. another atom has seven more electrons. starting at 3p, what is the remaining configuration? 3p63d34s2 3p43d54s2 3p64s23d3 3p44s23d

Mary is conducting an experiment on how pollution affects plant growth. how can she ensure that her data are reliable?

1) which of the following is the best example of a physical change? a) sugar dissolving in tea b) firefly glowing 2) in the combustion of ethane, what is/are the reactants? c2h6 + o2 ==> co2 + h2o a) c2h6 and o2 b) co2 and c2h6