GK
NUCLEAR SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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gives up two protons and two neutrons.
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maintains the same number of protons and neutrons.
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loses a proton and gains a neutron.
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gains a proton and loses a neutron.
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Detailed explanation-1: -In beta minus ( −) decay, a neutron is converted to a proton, and the process creates an electron and an electron antineutrino; while in beta plus (+) decay, a proton is converted to a neutron and the process creates a positron and an electron neutrino. + decay is also known as positron emission.
Detailed explanation-2: -Beta decay occurs when, in a nucleus with too many protons or too many neutrons, one of the protons or neutrons is transformed into the other. In beta minus decay, a neutron decays into a proton, an electron, and an antineutrino: n Æ p + e-+.
Detailed explanation-3: -In a beta decay, a neutron (made of one up quark and two down quarks) can transform into a proton (made of two up quarks and one down quark), an electron, and an electron antineutrino. This reaction can happen in a neutron within an atom or a free-floating neutron.
Detailed explanation-4: -Neutrons disappear through a process called neutron beta decay, transforming themselves into protons by emitting an electron (shedding a negative charge to become positively charged) and an antineutrino.
Detailed explanation-5: -A: In beta-minus decay an atom gains a proton, and in beta-plus decay it loses a proton. In each case, the atom becomes a different element because it has a different number of protons.