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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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potential energy

Explanation:

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What is the molar mass of Na2CO3? 60.0 g/mol 106.0 g/mol 118.0 g/mol 141.0 g/mol
Dmitry [639]

Answer is: the molar mass od sodium carbonate (Na₂CO₃) is 106.0 g/mol.

M(Na₂CO₃) = 2 · Ar(Na) + Ar(C) + 3 · Ar(O).

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