19.9% of all the isotopes of an element have a mass of 9.93 amu and 80.1% have a mass of 10.94 amu. What is the average mass of this element?

Which atom or ion is the largest? 0 a. 0 0 0 0 e. li

13. a covalent bond between two atoms is likely to be polar if: a. one of the atoms is much more electronegative than the other. b. the two atoms are equally electronegative. c. the two atoms are of the same element. d. the bond is part of a tetrahedrally shaped molecule. e. one atom is an anion.

20 pts ‼️ an unmanned spacecraft travels to mars. mars has a lower strength of gravity than earth. where in the image is the spacecraft’s weight the greatest?