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Twelve electrons
What else can I help you with?
In an atom the number of electrons must be the same as the number of?
protons, because the protons are positive and the electrons are negative so to have a neutral atom the protons and electrons must be balanced
If an atom has 16 protons that atom must be which element?
Sulfur, which atomic number (in the PS) is 16, by definition equal to the number of protons in the nucleus
Why atomic number of an element indicates as the number of protons in the atom?
The atomic number of an element represents the number of protons in the nucleus of an atom. Since atoms are electrically neutral, the number of protons in the nucleus must be equal to the number of electrons outside the nucleus, making the atom overall neutral.
What must you know about an atom to determine its mass number?
The number of protons and neutrons in its' nucleus.
What is the nucleus element With 8 electrons?
The nucleus of an atom contains protons and neutrons, not electrons. If an atom has 8 electrons, it is most likely the element oxygen, which has 8 protons in its nucleus.
Are protons hydrogen atoms?
No. A proton could be considered a hydrogen ion or hydrogen nucleus, but a hydrogen atom must also contain an electron.
When an atomic number has an 8 as the number what else must it have?
Eight protons in the nucleus of each atom.
If an atom contains 15 protons it must contain?
Any atom should have equal number of protons and electrons. If the atom contains 15 protons then it must contain 15 electrons.
Rutherfords alpha scattering experiments showed that the charge on the nucleus of the atom must be?
The atomic nucleus is positive because contain protons.
What part of an atom must change for the atom to become a new element?
An atom must gain or lose protons from its nucleus to become an atom of another element. The number of protons, and to a much lesser extent the number of neutrons, will determine the chemical properties of an element.
How can an atom emit a proton?
An atom cannot emit a proton. Protons are found within the nucleus of an atom and do not naturally emit from an atom. The process where protons are emitted from a nucleus is called proton emission and typically occurs in nuclear reactions or decays in radioactive isotopes.
Why are all atomic numbers whole numbers?
The atomic number is the number of protons.
