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25 October, 15:58

Rank from most to least number of valence electrons. To rank items as equivalent, overlap them.

Arrange the elements in decreasing order of the number of valence electrons.

kr

ca

ba

br

li

f

as

sb

o

al

cl

si

na

ar

sr

+5
Answers (1)
  1. 25 October, 19:09
    0
    kr: 8

    ca: 2

    ba: 2

    br: 7

    li: 1

    f: 7

    as: 5

    sb: 5

    o: 6

    al: 3

    cl: 7

    si: 4

    na: 1

    ar: 8

    sr: 2

    Thus, in decreasing order, it should be written as:

    Kr, Ar

    Br, F, Cl

    O

    As, Sb,

    Si

    Al

    Ca, Ba, Sr

    Li, Na
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