valence electrons is the same as the number as the last digit in the group :)
The atomic number of an element is the number of protons. The number of protons is equal to that of electrons. So, the atomic number can tell the number of protons and electrons.
You find it by writing it's electronic configuration.
Mass number = Atomic number (or number of protons) + Number of neutrons
Atomic number is equal to number of protons.
The number of protons in an atom is different for every element. If you look at the periodic table, then the number labeled "atomic number" is the number of protons.
# protons = atomic number.
It is equal to the atomic number. Elements are arranged according to atomic number in periodic table
An ion is defined as an element with a charge. Because elements vary with how many protons they have (along with neutrons to form isotopes) it is impossible to put a set number on how many protons and electrons all ions have. An element (or compound) becomes an ion when the substance gains (to become a positive ion) or loses (to become a negative ion) an electron(s).
Sort of. That is, an element with 1 proton is always some isotope of hydrogen, and an element with 8 protons is always going to be an isotope of oxygen. However, it's not possible to predict the element name just by knowing the number of protons; you also have to have (or have memorized) a periodic table. Newly-discovered elements (and those that haven't been produced yet) are given "placeholder" names based strictly on the atomic number / number of protons. Once their discovery has been verified, they get "real" names. An example is the element with 109 protons, meitnerium, which until it received its official name was called unnilennium (109-ium in pseudo-Greek).
The atomic number on the periodic table is the number of protons for the element.
The number of protons is the atomic number of the element.
The atomic umber of an element listed in the periodic table refers to number of protons in the element. Atomic number is equal to number of protons.
The atom's atomic number is equal to the number of protons in its nucleus.For example, an element with 19 protons in its nucleus is Potassium (K), the 19th element on the periodic table.
The number of protons an element has
the atomic number of an element is same as the number of protons
It is element 29 on the periodic table. The elements in the periodic table are arranged according to increasing atomic number. The atomic number is the number of protons in the element's atoms.
The atomic number is the number of protons in the nucleus of an element. It defines the element. No two different elements can have the same number of protons. It is used to lay out the periodic table because the table shows the elements in increasing numbers of protons.
The element that contains 14 protons in its atoms has the atomic number 14. On the Periodic Table, this element is silicon, Si.
The number of protons in a nuclide is the atomic number for that element on the periodic table.
It is based on the number of protons in one atom.
Yes, and the number of protons in the atoms of an element is that element's atomic number on the periodic table.