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oee [108]
3 years ago
6

Which of the following is a characteristic of the lanthanides?

Chemistry
2 answers:
Vilka [71]3 years ago
8 0

Answer:

APEX

Explanation:

A

inysia [295]3 years ago
3 0

Answer:

A

Explanation:

Lanthanides share the following common properties: Silvery-white metals that tarnish when exposed to air, forming their oxides. Relatively soft metals. Hardness increases somewhat with higher atomic number.

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Hey there!

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Hope this helps!  

7 0
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How do you test for hydrogen?
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3 years ago
At stp,a certain mass of gas occupies a volume of 790cm3. find the temperature at which the gas occupies 1000cm3 amd has a press
Luden [163]

The temperature : 332.75 K

<h3>Further explanation</h3>

Conditions at T 0 ° C and P 1 atm are stated by STP (Standard Temperature and Pressure). At STP, Vm is 22.4 liters / mol.

volume of gas = 790 cm³ = 0.79 L

mol of gas at STP :

\tt \dfrac{0.79}{22.4}=0.035

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3 0
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