In the symbol 42he, the subscript 2 is the for helium and the superscript 4 is the for helium.

The blackbody curve for a star name zeta is shown below. what is the peak wavelength for this star ?

What is the empirical formula of c6h18o3? ch3o c2h5o c2h6o c2h5o5

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