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30.06.2019 •
Chemistry
What is the parent isotope of helium 3? a. hydrogen-3 b. lead-3 c. hydrogen 14 d. nitrogen 14 e. none of the above
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Ответ:
None of the above are the parent isotope of helium 3. Helium-3 is a light, non-radioactive isotope of helium with two protons and one neutron
Ответ:
Group 1 - are alkali metals due to their ability in producing alkaline compounds.
Transitions- are D block elements
Group 1 and transition metals both have unpaired electrons
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