Iodine-131 is a radioactive isotope. after 7.00 days, 54.7% of a sample of 131i remains. what is the half-life of 131i?

Which substance has non polar covalent bonds

What rule is used to determine how many covalent bonds an element can form? a. the number of covalent bonds is equal to six c the number of covalent bonds is equal to five minus the group number plus the group number b. the number of covalent bonds is equal to eight d. none of the above minus the group number select the best answer from the choices provided

Which rate indicates the number of children that would be born per woman if she were to live to the end of her child bearing years