All the isotopes of a given atom have(1) the same mass number and the same atomic number(2) the same mass number but different atomic numbers(3) different mass numbers but the same atomic number(4) different mass numbers and different atomic numbers

Starch and are common polysaccharide carbohydrates found in plants. sucrose glycogen fructose cellulose

Which statement correctly describes metallic bonds? a. they form when certain atoms lose electrons and other atoms gain electrons. b. they involve an attraction between anions and cations. they always involvpoth a metal and a nonmetal. d. they can only form between atoms of the same element. e. they form because electrons can move freely between atoms.

Ab c or d ? i’m not sure what the answer is