<u>Answer</u>:
When Uranium-238 decays, it emits 8 Alpha particles and 6 beta particles before finally becoming the stable daughter product. The atomic number and mass number of the daughter product is 92 and 234 respectively.
<u>Explanation</u>:
In the process of decay of Uranium-238, it emits alpha particles, and the resultant product is Thorium-234, which turns into Protactinium-234, and this Protactinium-234 undergoes the beta decay to form the Uranium-234.
As per the question, a stable daughter product is created after the emission of alpha and beta particles, this implies that Uranium-234 is a stable product after the decay of Uranium-238. Therefore, the atomic number is 92 (number of protons) and the mass number is 234 (protons+neutrons) which is also the element of the naming.
Asbjørn 'Bear' Riis, Danish professional wrestler
Bjarne Riis (born 1964), Danish former professional road bicycle racer, now the team owner and manager of Danish UCI ProTour outfit Team CSC
Fredrik Riis (1789-1845), Norwegian county governor
Jacob Riis (1849-1914), Danish-American muckraker journalist, photographer, and social reformer
Nelson Riis (born 1942), businessman and former Canadian politician and New Democratic Party (NDP) Member of Parliament
Povl Riis, gastroenterologist
Answer:
A.
Explanation:
Only the first three planets revolve around the Sun.
