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protons and neutrons
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∙ 11y ago
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How many protons does an atom of Carbon have if it has a plus 2 charge and a mass of 15?
6 Charge and mass do not change this answer.
Which two particles make up most of the mass of a hydrogen-2 atom?
The proton and the neutron make up most of the mass of a hydrogen-2 atom.
If you add a proton neutron and electron to an atom explain why the atom would not be the same element?
BECAUSE ON ADDING ANYTHING (PROTON, NEUTRON OR ELECTRON) THE CHEMICAL PROPERTIES OF THE ATOM DOES NOT REMAIN THE SAME. 1. AS ON ADDING ELECTRON THE ATOM WILL BE IONIZED AND WILL BECOME MORE NEGATIVELY CHARGED AND THUS WILL REACT WITH DIFFERENT ELEMENT IN A DIFFERENT MANNER OR FORM DIFFERENT CHEMICAL FORMULAS. FOR EXAMPLE: C + O2 = CO2 BUT IF WE ADD 2 MORE ELECTRONS TO OXYGEN THE IT WILL FORM CO. 2. THE ATOMIC MASS OF A HYDROGEN ATOM IS 1 BECAUSE IT ONLY CONTAIN 1 PROTON (i.e. NO NEUTRON) BUT IF WE ADD I NEUTRON TO IT ITS ATOMIC MASS WILL BE 2 WHICH IS THE ATOMIC PASS OF A DIFFERENT ELEMENT DEUTRIUM AND THUS THE ELEMENT WILL NOT REMAIN THE SAME.(not sure of the spelling & grammar.) (ii)THE ATOMIC MASS OF URANIUM'S STABLE ISOTOPE IS 238. IF WE ADD A NEUTRON ITS ATOMIC MASS WILL BECOME 239 WHICH IS THE ATOMIC MASS OF POLONIUM AND THUS THE ELEMENT WILL NOT REMAIN SAME. 3. IF WE ADD PROTON TO AN ATOM ITS ATOMIC NUMBER WILL CHANGED AND THUS IT CHEMICAL PROPERTIES WILL ALSO BE CHANGED.
Which particles determine the mass of an atom?
The atomic mass unit is defined to be 1/12 of the mass of a carbon-12 atom. Atomic masses can determined by weighing molar amount of an isotope. Absolute masses (in kg) are determined by measuring the amount that charged atoms are deflected by magnets, since if you know the charge you can calculate mass from the amount of deflection.
What causes atoms of the same elements to have different atomic masses?
Elements have a certain number of protons(+), neutrons(0) and electrons(-). The atomic number shows the number of protons and electrons in the element (has to have the same number of each to stay stable). The atomic mass shows the number of neutrons. For example, Hydrogen has an atomic mass of ~1.01 (and an atomic number of 1). That means that it has 1 electron and 1 proton but no neutron (1 proton+0 neutrons=1). Helium has an atomic mass of ~4.00 (and an atomic number of 2). That means that it has 2 electrons, 2 protons and 2 neutrons (2 protons+2 neutrons=4). Hope you can understand. :S
What 2 parts of an atom have the same mass?
Proton and neutron have similar mass, but not identical.
What is the mass number of this atom?
2
What 2 parts of an atom give it is mass?
The atomic mass of an element depends on the weight of the protons, neutrons, and electrons (almost negligible) in one mole (6.022 x 10^23 atoms) of the element.
What is the total mass of an atom having 2 neutrons 2 electrons and 2 protons?
It is about the helium gas. mass number of it is 4.
What does alpha decay do to an atom mass and atomic number?
Reduces the number by 2 and the mass by 4.
What percentage of an atom's mass is caused by the Higgs boson?
About 2% of an atom's mass is caused by the Higgs boson. The rest is due to the effect of the Strong Nuclear Force.
When it loses two electrons to become a calcium ion what is it's new mass?
38 amu EDIT: This answer is INCORRECT. Electrons do not have significant mass.
What is the mass number of a helium atom that has 2 protons and 2 neutrons?
Number of neutrons = Mass number - Number of protons = 4 - 2 = 2 neutrons
What is the mass of 1.63 x 1021 silicon atom?
7.60x10^-2 g
What is the mass number of helium atom?
The atomic number of helium is 2. Its mass is 4.002602 u ± 0.000002 u
How many protons does an atom of Carbon have if it has a plus 2 charge and a mass of 15?
6 Charge and mass do not change this answer.
The mass of a neutron is nearly equal to the mass of what other subatomic particle?
No, an alpha particle is the nucleus of a normal helium atom - 2 protons + 2 neutrons. Therefore, an alpha particle has approximately 4 times the mass of a proton or neutron.No, an alpha particle is the nucleus of a normal helium atom - 2 protons + 2 neutrons. Therefore, an alpha particle has approximately 4 times the mass of a proton or neutron.No, an alpha particle is the nucleus of a normal helium atom - 2 protons + 2 neutrons. Therefore, an alpha particle has approximately 4 times the mass of a proton or neutron.No, an alpha particle is the nucleus of a normal helium atom - 2 protons + 2 neutrons. Therefore, an alpha particle has approximately 4 times the mass of a proton or neutron.
