The answer is <span>Polonium-218 (84 protons).
Alpha particles consist of two protons and two neutrons. So, mass is 4 (2+2) amu </span><span>.
</span><span>When an atom of emits an alpha particle, its atomic number will be reduced by 2 and a mass number will be reduced by 4:
</span> → + .<span>
After emission of the alpha particle from Radon-222 with 86 protons, the daughter product will have the atomic number reduced by 2: 86-2 = 84 and the mass number reduced by 4: 222-4=218:
</span> → + .
It's called acid rain. Acid rain is formed from chemicals in the air caused by pollution and gases from factories.
Does nature really hurt itself? does nature want to be ruined? if I would be a nature I will kick those people that have nothing to do but hurt me. Pollution is a result of human activities. it is a problem caused by many.
Answer:
opposing abortion and euthanasia.
Explanation:
supporting the belief that it is immoral for a pregnant woman to have the freedom to choose to have an abortion (= an operation to end a pregnancy) if she does not want to have a baby
<span>The greatest incidence of osteoporosis will be found in the menopausal women.</span>
<span>Osteoporosis
can occur in both men and women and at any age, but it is most common in older
women. Osteoporosis cane defined as a disease with increased bone weakness. It
is the most common cause of a broken bone among the elderly and it is followed
by chronic pain and a decreased ability to carry out normal activities.</span>
