An atom with an atomic number of 20 has 20 protons.
The atomic number is determined by the number of protonsin the nucleus of the atom.The atomic number is conventionally written to the lower left of the chemical symbol for the element, e.g. for oxygen and for copper:8O 29Cu
Atomic number stands for the number of protons or electrons present in an atom
The atomic number equals the number of protons in an atom, as well as the number of electrons in a stable, electrically neutral atom, it represents the identity of an element ,the simplest form of matter.
The atomic number of an atom is also known as the proton number. it is, quite simply, the number of protons in the atoms nucleus - as an atom needs to be equally charged, it is also the number of electrons in an atom however, if an atom is radioactive this is not always true.
The atomic number is equal to the number of protons in the nucleus and in a neutral atom will also equal the number of electrons.
27 protons atomic number = number of protons
The atomic number is the number of protons in an atom (which equal the number of electrons present) The atomic mass is the number of protons+neutrons in an atom
The atomic number of an atom is the number of protons or electrons present in an atom.
it shows how many protons are present in an atom
The atomic number tells you how many protons and electrons are in a specific element.Atomic number tells us about protons. Number of protons that atom contains.
Atomic mass is defined as the sum of the no. of proton and neutron present in the nucleus of an atom and Atomic Number is defined as the no. of electrons present in the extra nuclear part of an atom . BY; SHUBHAM KAKKAR
The atomic number is determined by the number of protonsin the nucleus of the atom.The atomic number is conventionally written to the lower left of the chemical symbol for the element, e.g. for oxygen and for copper:8O 29Cu
The atomic number of an atom is equivalent to the number of protons in its nucleus.
The number of protons is the atomic number.
Atomic number stands for the number of protons or electrons present in an atom
it shows how many protons are present in an atom
The atomic number of an atom is determined by the number of protons it has.