the radius of sodium atom is 2.44×10-⁸ mm. the radius of oxygen atom is 1.22×10-⁵ mm. compare the radius of oxygen atom to sodium atom
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The term ‘myo’ refers to muscle and ‘genic’ refers to originating from. The altered cardiac muscles or the nodal tissues of the heart – the sino-atrial or the sinus node (SA node) is capable of generating an impulse that extends over the heart wall which results in a heartbeat. As the cardiac impulse initiates in the cardiac muscles, it is referred to as myogenic.
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A nucleus is the positively charged center of the atom consisting of protons and neutrons. It's also known as the "atomic nucleus". Nearly all the mass of an atom is contained within the nucleus, since protons and neutrons have much more mass than electrons
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