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arsen [322]
3 years ago
6

Which is a property of potassium (K)? O A. It is dull and brittle. O B. It is not reactive. O C. It is white and hard. O D. It i

s extremely reactive.​
Chemistry
1 answer:
atroni [7]3 years ago
5 0

Answer:

D. It is extremely reactive.​

Explanation:

Potassium has atomic number of 19 and belongs to the group 1 elements.

A. It is dull and brittle

This is not true as potassium is a metal with a silver lustre.

B. It is not reactive

This is false. Because it is a group 1 element, it would readily lose it's electron to achieve octet configuration making it a reactive metal.

C. It is white and hard.

Potassium is a white metal, however it is not hard. Rather it is soft.

D. It is extremely reactive.​

This is correct. Because it is a group 1 element, it would readily lose it's electron to achieve octet configuration making it a reactive metal.

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3 years ago
3.311x divided by 10^25 particles= ? moles
algol13

Answer:

5.5 moles of given substance.

Explanation:

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The number 6.022 × 10²³ is called Avogadro number.

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3 years ago
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