Platinum Quiz: questions and answers

1. What is the atomic number of Platinum?

21

82

78

2. Who discovered Platinum in 1735?

Diego García de Moguer

Juan Rivera

Antonio de Ulloa

3. What is the element category of Platinum?

Metalloids

Actinoids

Transition metal

4. How many naturally occurring isotopes does Platinum have?

5

6

2

5. Where does 80% of the world's Platinum come from?

South Africa

Peru

Canada

6. Platinum is soluble in:

Hot aqua regia

Nitric acid

Hydochloric acid

7. Which alloy of Platinum is used to make permanent magnets?

Platinum-cobalt

Platinum-copper

Platinum-ruthenium

8. What is the melting point of Platinum?

1868.3 °C

1768.3 °C

1168.3 °C

9. Platinum has a crystalline form of:

fcc

hcp

bcc

10. What is the color of natural Platinum?

Grey

White

Silvery-White

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