the mass of a proton and neutron is almost same which is about 1.6*10 to power-27.
Periods neither have same protons nor neutrons. They have same shells.
Protons and neutrons have almost the same mass.
Uncombined atoms have the same number of neutrons as protons only if they are isotopes of the element, which means the atoms have the same number of protons but different numbers of neutrons. Otherwise, atoms with the same number of protons and neutrons would be considered as different elements.
Atoms having the same number of protons and neutrons make up the same element.
Carbon Number of Protons/Electrons: 6 Number of Neutrons: 6
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The pair below that describes isotopes of the same element is B, an atom with 6 protons and 6 neutrons-an atom with 6 protons. It is not A, an atom with 6 protons and 8 neutrons- an atom with 8 protons and 6 neutrons. Isotopes of the same element have the same number of protons and electrons, which is the atomic number of the element.
Several come to mind. They are both found in the nucleus of an atom. Protons have a positive charge, while neutrons have no charge. They are nearly the same size, though neutrons are a bit larger. The sum of the protons and neutrons in an isotope of an element is its mass number.
All isotopes of radium have the same number of protons; the number of neutrons is different.
NO they have same number of protons. But neutrons are different.
Isotopes are atoms of the same element with the same number of protons but different numbers of neutrons. An example is carbon-12 and carbon-14, which both have six protons but differ in the number of neutrons they possess.
Isotopes are atoms of the same element, having the same number of protons but different number of neutrons.