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19 January, 17:06

What is the atomic number of the element in Group 4A, and Period 5?

a. 68

b. 131

c. 222

d. 462

+2
Answers (1)
  1. 19 January, 20:11
    0
    Tin

    Metals

    Group 4A, Period 5

    Atomic mass 118.71
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