Argon (Ar) is an element in group 18. Argon is . a gas highly reactive
a metalloid
a good conductor of heat

Which is true of transition metals when moving from left to right on the periodic table? the d sublevels are not filled across the period. the cation radii become larger across the period. atomic radii increase slightly and then start to decrease. atomic radii decrease slightly and then start to increase. o

How heavy is thanos? a) 3000 lbs b) all of it c) the price of tea in china d) heavy enough

How many protons, electrons, and neutrons are in each of the following isotopes? a. zirconium-90 b. palladium-108 c. bromine-81 d. antimony-123