An airplane is at an elevation of 4,280 ft. it ascends 500 ft and later descends1,500 ft. what is its final elevation?

5280

Step-by-step explanation: just do 4280-500=3780

and then add 1500 to 3780 and you get 3180+1500=5280 wich is your answer

the answer is: d) o, f, and kr.

atomic radius of bromine (br) is 114 pm.

atomic radius of oxygen (o) is 73 pm.

atomic radius of fluorine (f) is 72 pm.

atomic radius of krypron (kr) is 112 pm.

the atomic radius of a chemical element is a measure of the size of its atom.

the atomic radius varies with increasing atomic number, but usually increases because of increasing of number of electrons.

the atomic radius decreases across the periods because an increasing number of protons, because greater attraction between the protons and electrons.