Respuesta :
1. A. 4.0012 B. An alpha is a decay is a radioactive process in which a particle with two neutrons and two protons is ejected from the nucleus of a radioactive atom.
Answer:
1. A) A=4
C) Positive (+2e)
2. A) A remains constant.
B) Negative charge, in other words, an electron.
3. A) The atom loses 2 protons and 2 neutrons.
B) Then, the electron is expelled of the nucleus and the proton remains.
4. Radioactive decay, for instance, minerals of uranium and thorium
5. Mass of a beta
6. Pb-206.
Explanation:
1.
A) Alpha particle is a helium nucleus, so it is made of two protons and two neutrons, so the mass number is A=4.
B) An alpha particle consists of two protons and two neutrons. It is identical to the helium nucleus, and when a radioactive element emits an alpha particle, it loses two protons and two neutrons.
C) As we know alpha particles have two protons and neutrons, then the charge will be positive (+2e), because neutron does not electrical charge.
2.
A) Beta minus (B-) decay implies the emission of an electron (beta particle) from the nucleus, and as we know, the mass number is the number of protons and neutrons, A remains constant.
B) Beta minus is a negative particle, so the particle emitted is a negative charge, in other words, an electron.
C) The other name is electron.
3.
A) The atom loses 2 protons and 2 neutrons.
B) In this particular decay, a neutron becomes a proton plus an electron and neutrino. Then, the electron is expelled of the nucleus and the proton remains.
4. Helium on Earth is a result of radioactive decay, for instance, minerals of uranium and thorium. When they decay, they emit alpha particles and these particles immediately combine with the around electrons.
5. Because the mass of a beta minus particle (9.1×10⁻³¹ kg) is 4 orders of magnitude less than alpha particle ( 6.6×10⁻²⁷ kg), it will be easier to move an electron than an alpha particle.
6. When Tl-206 emitted and electron, beta decay, the daughter product will be Pb-206.
I hope it helps you!
