Answer:
The answer to your question is below
Explanation:
Elements in group 1A all:
a. gain 1 electron This option is wrong, elements in group 1A loses one electron.
<u>b. lose 1 electron </u><u>This option is right.</u>
c. are non-metals This option is incorrect, elements in group IA, are metals.
d. have 2 energy levels This option is incorrect, only one element in each group has 2 energy levels.
The emission of a beta particle has the effect of : C. No change in mass
basically, beta particle has a very very little mass compared to the proton and neutrons, so little to the point that it never considered as a change in mass. But it does decreases the charge of atom
hope this helps
<span>Radium and Polonium were named in honor of Marie Curie.
SO yeh true
Hope this helps!
:)
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Answer:
Thallium is an isotope name that has a mass number of 201
