The relative masses and charges of protons, neutrons and electrons are:mass chargeproton 1 +1neutron 1 0electron negligible −1Using these data, what are the values for the mass and charge of the helium nucleus?mass chargeA. 2 +2B. 2 0C. 4 +2D. 4 0Page 8 of 77
Question
The relative masses and charges of protons, neutrons and electrons are:mass chargeproton 1 +1neutron 1 0electron negligible −1Using these data, what are the values for the mass and charge of the helium nucleus?mass chargeA. 2 +2B. 2 0C. 4 +2D. 4 0Page 8 of 77
Solution
The helium nucleus consists of 2 protons and 2 neutrons.
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First, let's calculate the mass. Since the mass of a proton is 1 and the mass of a neutron is 1, the total mass of the helium nucleus would be the sum of the masses of its protons and neutrons. That is, 2 (from protons) + 2 (from neutrons) = 4.
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Next, let's calculate the charge. The charge of a proton is +1 and a neutron has no charge (0). The total charge of the helium nucleus would be the sum of the charges of its protons and neutrons. That is, +2 (from protons) + 0 (from neutrons) = +2.
So, the mass and charge of the helium nucleus are 4 and +2 respectively. Therefore, the correct answer is C. 4 +2.
Similar Questions
Which of the following has a charge of +1 and a mass of 1 amu ?A A neutron B A proton C An electron D A helium nucleus
Complete the table below, using the diagram of an atom shown at right. Properties of subatomic particlesname symbol charge(in multiples of e) approximate mass(amu) locationon diagramelectron n0 0 1.0 A
Protons...A..are positively charged and have roughly the same mass as electrons.B..are negatively charged and have roughly the same mass as electrons.C..are positively charged and have roughly the same mass as neutrons.D..are negatively charged and have roughly the same mass as neutrons.
The ratio of charge and mass would be greatest forA Proton B Electron C Neutron D Alpha
identify and describe protons, neutrons and electrons in terms of their relative charges and relativemasses
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