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Setler [38]
3 years ago
9

Radium-227 decays to a radon isotope.

Chemistry
2 answers:
dimulka [17.4K]3 years ago
7 0

Answer:

All isotopes of radium are highly radioactive, with the most stable isotope being radium-226, which has a half-life of 1600 years and decays into radon gas (specifically the isotope radon-222).

Explanation:

All isotopes of radium are highly radioactive, with the most stable isotope being radium-226, which has a half-life of 1600 years and decays into radon gas (specifically the isotope radon-222).

ivolga24 [154]3 years ago
5 0

Answer:

thats all i got

Explanation:

Radium (Ra), radioactive chemical element, the heaviest of the alkaline-earth metals of Group 2 (IIa) of the periodic table. Radium is a silvery white metal that does not occur free in nature.

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Here we have to identify the sample which need more energy to heat the sample 1 degree Celsius.

Among the given elements magnesium will require more energy than the others to heat.

As per the definition of specific heat of a compound, the amount of heat required to increase the temperature of the material 1 degree Celsius is the specific heat of the material.

The given data are-

substance              specific heat

Lead                            0.129

Tin                                0.21

Silver                            0.235

Iron                              0.449

Calcium                        0.647

Granite                         0.803

Aluminium                   0.897

Magnesium                  1.023

From the given data lead, magnesium, iron and aluminium have the specific heat 0.129, 1.023, 0.449 and 0.897 respectively. Thus magnesium will require more energy than the others to heat.

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