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qwelly [4]
3 years ago
6

Which of the following groups contains mostly radioactive elements?

Chemistry
2 answers:
Blizzard [7]3 years ago
6 0

Answer:

Inner transition metals

Explanation:

The inner transition metals are also known as rare earth metals. The rare earth metals includes Lanthanide and Actinide Series of the periodic table. The elements with atomic numbers 89 to 103 are placed in the third group of the periodic table are Actinides. Examples are uranium and plutonium. These elements are with high oxidation number are radioactive elements. Thus, the inner transition metals are radioactive elements.

lukranit [14]3 years ago
6 0

Answer:

inner transition metals

Explanation:

The inner transition metals consists mostly of the f-block elements. They comprise of lanthanides and actinides. Many of them are radioactive because they possess atomic numbers greater than 82, hence their nuclei are unstable. Many of them are synthetic elements hence they are highly radioactive with very short half lives.

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Answer:

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Explanation:

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8 0
3 years ago
A sucrose packet contains 4.0g sucrose C12H22O11, how many moles of sucrose does the packet contain?
SpyIntel [72]

Answer:

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A hot metal plate at 150°C has been placed in air at room temperature. Which event would most likely take place over the next fe
Inga [223]

Answer:

The air molecules that are surrounding the metal will speed up, and the molecules in the metal will slow down.

Explanation:

As molecules heat they begin to move faster. The heat from the metal plate will make the molecules at room temperature move faster. And the room temperature makes the hot place cool, making the hot plate molecules slow down.

To visualize this, you can use this link

https://phet.colorado.edu/en/simulations/gas-properties

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