There are three different subatomic particles in an atom. The nucleus of an atom is composed of protons and neutrons, which are tightly packed together. Orbiting the nucleus, we find the tiny, negatively charged particles known as electrons....
The electrons in an atom are attracted to the protons in the nucleus by the electromagnetic force. Electrons can escape from their orbit, but only in response to an external source of energy being applied. The closer orbit of the electron to the nucleus, the greater the attractive force; hen...
The electrons in an atom are attracted to the protons in the nucleus by the electromagnetic force. Electrons can escape from their orbit, but only in response to an external source of energy being applied. The closer orbit of the electron to the nucleus, the greater the attractive force; hen...
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Most of an atom is empty space. If an atom were about as big as a baseball stadium, the nucleus would be the size of a pea in the very center and the electrons would be somewhere on the outside edge.What makes an atom of gold different from an atom of iron is the number of ...
An atom has 20 electrons and 20 neutrons. What is the mass of this atom? What is the difference between an isotope and an element? What is the atomic mass of an atom that has 6 protons, 6 neutrons, and 6 electrons? What is roentgenium's atomic mass?
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The mass of a carbon -12atom was determined by a mass spectrometer and found to be equal to 1.992648xx10^(-23)g is is known that 1 mole of C-12 atom weighing 12 g contains N(A) number of atoms Thus. 1 mole of C-12 atoms =12g= 6.022xx10^(23) atoms rAr
The mass number of an atom is the total number of protons and neutrons contained within the nucleus of the atom. The number of protons determines the element and will always equal the atomic number of that element. The number of neutrons can change and will determine which isotope of that ...
more massive than an electron. Atoms always have an equal number of protons and electrons, and the number of protons and neutrons is usually the same as well. Adding a proton to an atom makes a new element, while adding a neutron makes an isotope, or heavier version, of that atom. ...