There are 4 groups in a concert. each group sings the same number of songs. which equation shows how many songs will be performed in the concert? use t to represent the total number of songs in the concert, and s to represent the number of songs performed by a group. a. t = s + 4 b. t = s – 4 c. t = 4s d. t = s/4

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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.