1. what is the maxomum number of electrons that can be contained in the 4th principle energy level?
2. what is the total number of electrons in the 2nd principle energy level of a calcium adom in the groumd state?
3. which is the correct electron dott symbol of the flouride ion?
4. if the electron configuration of an adom of element x is small22ssmall22psmall4, the electon dot symbol for the element is?
5. what is the number of hours required for potassium-42 to pass through three half-life periods?
6. what fraction of a simple of carbon-14 will remain after 17 190 years?
7. in order to obtain medals from their sulfide ores the ores are usually first concerted into? sulfates, culfites, oxides, or carbonites?
8. which medal may be connected to an iron pipe to prevent corrosion of the iron? co, sn, pb, or mg?
9. tje self-protective coating that forms on aluminum medal is?
10. which type of chemical reaction is the corrosion of iron?
10. one of the medals are obtained commercia
2006-09-12
16:01:30
·
6 answers
·
asked by
Anonymous
in
Education & Reference
➔ Homework Help