In washington, dc, 17th, 18th, 19th, and 20th streets are parallel streets that intersect pennsylvania avenue and 1st street.

to the nearest foot, how long is pennsylvania ave. between 19th st. and 18th st? (hint: the 425 ft on the map above represents the length of pennsylvania ave. between 20th st. and 19th st.)

a.
569 ft
c.
559 ft
b.
573 ft
d.
575 ft

true

step-by-step explanation:

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.

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