Which overall effect does the activity of a continental glacier display? U-shaped formations

large mountains

flattened and rounded-off land

rugged terrain and landscape

Flourine is found to undergo 10% radioactivity decay in 366 minutes determine its halflife

An atom of sodium-23 (atomic number = 11) has a positive charge of +1. give this information, how many electrons does it have? how many proteins and neutrons does this atom have

Three alkali metals in group 1 are a. calcium, strontium, barium b. boron, aluminum, gallium c. sodium, potassium, rubidium d. fluorine, iodine, chlorine