Xenon. Take the Atomic Mass of 131 and subtract it's protons 54, to get 77 neutrons.
Atoms are defined by the number of protons in the nucleus; therefore, we can tell what element it is by the number of protons (the information about the neutrons and electrons is unnecessary). An atom with 77 protons is iridium.
Carbon is the element which has 6 protons in the nucleus.
The number of protons in the nucleus identifies the element. It is like a fingerprint for that element. No other element will have that same number of protons. As soon as the number of protons in the nucleus changes, so does the identity of the element change.
Sodium is an element itself, it has no elements inside.
All elements have neutrons and protons within the nucleus.
Atoms are defined by the number of protons in the nucleus; therefore, we can tell what element it is by the number of protons (the information about the neutrons and electrons is unnecessary). An atom with 77 protons is iridium.
Carbon is the element which has 6 protons in the nucleus.
The number of protons in the nucleus determines the identity of the element.
The number of protons in the nucleus identifies the element. It is like a fingerprint for that element. No other element will have that same number of protons. As soon as the number of protons in the nucleus changes, so does the identity of the element change.
Sodium is an element itself, it has no elements inside.
Lead has more protons in the nucleus of its atoms compared to tin. Lead has 82 protons while tin has 50 protons in its nucleus.
The element is determined by the atomic number - the number of protons in the nucleus. In this case, element 36 is Krypton. The mass is the sum of protons and neutrons in the nucleus. Here we have a mass of 77, and a quick check confirms that an isotope of Krypton with a mass of 77 does indeed exist.
Protons are located in the nucleus of an atom. For americium, a radioactive element with atomic number 95, the nucleus contains 95 protons.
An element can be identified by the number of protons in the nucleus of its atoms.
The number of protons in the nucleus of its atoms.
All elements have neutrons and protons within the nucleus.
The number of protons in a nucleus depends on which element it is. ( The number of protons is the decider as to which element it is. ) The number of electrons in an atom is the same as the number of protons in the nucleus, but none of the electrons are in the nucleus. Rather, they orbit around the nucleus like planets round a star.