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13 February, 12:53

234.

In the equation:

Th →

90

particle is presented by. X?

234

Pa + X, which

91

0

1

1.

3.

-70

TH

0

4

He

2.

4.

*70

+4
Answers (1)
  1. 13 February, 13:33
    0
    the answer woul be 89 if you do the math right
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