Answer:
Refer to the attached page,
I've done the calculation over there
Answer:
Radium (Ra)
Explanation:
The nuclear fuel at Chernobyl was uranium-235. However, one of the decay products of uranium-235 is radium.
Radium is chemically similar to calcium since it has two valence electrons and is the heaviest and last member of group 2.
Owing to its chemical similarity to calcium, it was able to replace calcium in people's teeth and bones. Radium is radioactive, the half life of Ra-226 is about 1602 years.
Other elements of group 2 are; beryllium, magnesium, strontium and barium.
Answer:
i think it is 1.27 x1024
Explanation:
i don't really know though
Answer:
I don't know what you're saying cuz give me the brainless answer please
Answer:
3. small sizes and high ionization energies.
Explanation:
Hello,
Ionization energies are always related with the formation of positive ions. On the other hand, electron affinities are the negative ion equivalent, and their use is almost always confined to elements in groups 6 and 7 of the Periodic Table
Small sizes and high ionization energies turn out into great electron affinities since it is easier for an electron to be added to an atom if it is small and it has a high ionization energy to promote the aforesaid addition.
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