Thulium #69

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Quiz on Thulium

1 / 5

Though Thulium was discovered in 1879, the relatively pure thulium metal was obtained in ______

2 / 5

Thulium is used in portable ________ devices

3 / 5

Thulium is electro-negative.

4 / 5

Thulium is never found in nature in pure form.

5 / 5

One of the popular radioisotope used in industrial radiography is ________?

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