Which of the following elements will likely form a negative ion in its ionic compounds?
a. li, lithium
c. mg, magnesium
b. al, aluminum
d. cl, chlorine

How does the principle of electromagnetism explain the interaction between earth’s magnetic field and the solar wind?

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

One nanometer is equal to how many meters?