Is the atomic number equal to the number of protons True or false?
The atomic number equals the charge on the nucleus. It therefore also equals the number of protons in the nucleus and also equals numerically the number of electrons in the neutral atom.
The number of protons in a nucleus is called the atomic number and always equals the number of electrons in orbit about that nucleus (in a nonionized atom).
A mass number of a chemical element can be defined as the sum total of the number of protons and the number of electrons. For example, if we say the mass number of Oxygen is 16, we actually mean that the number of protons and the number of electrons in the oxygen atom is 16. Therefore, the given statement is true.
Therefore, atomic number is equal to number of protons or number of electrons.
The atomic number is the number of protons in an atom, and isotopes have the same atomic number but differ in the number of neutrons.
atomic number, the number of a chemical element in the periodic system, whereby the elements are arranged in order of increasing number of protons in the nucleus. Accordingly, the number of protons, which is always equal to the number of electrons in the neutral atom, is also the atomic number.
Atomic number is the number of protons present in the nucleus of an atom of an element. Example: The nucleus of hydrogen atom contains 1 proton and hence, the atomic number of hydrogen is 1. The nucleus of carbon atom has 6 protons and hence, the atomic number of carbon is 6.
All proper atoms have equal number of protons and electrons ie, all non-ions have equal number of protons and electrons. However when an atom is ionized by removing one electron, then it is positively charged and has one electron less than proton.
This is because in an atom the number of electrons is always equal to the number of protons to maintain neutrality. The mass number is equal to the sum of protons and neutrons.
proton, stable subatomic particle that has a positive charge equal in magnitude to a unit of electron charge and a rest mass of 1.67262 × 10−27 kg, which is 1,836 times the mass of an electron.
Why atomic number is equal to the number of protons and not electrons?
The number of protons is generally equal to the number of electrons. The number of protons does not change. But the number of electrons can change if the atom loses or galns electrons. Therefore the atomic number of an atom is the nubmer of protons and not the number of electron.
To calculate the numbers of subatomic particles in an atom, use its atomic number and mass number: number of protons = atomic number. number of electrons = atomic number. number of neutrons = mass number - atomic number.
The atomic number is equal to the number of protons. The mass number is equal to the sum of the number of protons and the number of neutrons .
Consider the element helium. Its atomic number is 2, so it has two protons in its nucleus. Its nucleus also contains two neutrons.
The atomic number or nuclear charge number (symbol Z) of a chemical element is the charge number of an atomic nucleus.
The correct answer is A. The atomic number of an element is equal to the number of protons in the atom's nucleus.
The atomic number (Z) of an element is the number of protons in the nucleus of each atom of that element. This means that the number of protons is the characteristic which makes each element unique compared to all other elements. Elements are different because of their atomic number.
In An Atom the number of Protons equals the number of electrons. Flashcards | Quizlet.
Number of neutrons in an atom is equal to atomic mass - atomic number.