Extract from the mass number (in the hyphen notation) the atomic number.
Hyphen Notation is the name of the element, then hyphen, then the mass number written after the element. For example, Chlorine-35.
P-33
These symbols are:5626U and Fe-56.
The atomic number of selenium is 34. So there are 34 protons. In Se-80, there will be 46 neutrons (80 - 34 = 46) Note: There is no isotope Selenium-30 as originally asked in the question.
Rn-222
Hyphen Notation is the name of the element, then hyphen, then the mass number written after the element. For example, Chlorine-35.
Ge-73
Element - Atomic Mass # Example: Carbon - 12
P-33
These symbols are:5626U and Fe-56.
Li-7. Tizz the element then a dersh (dash) then the atermic merss (atomic mass).
The atomic number of selenium is 34. So there are 34 protons. In Se-80, there will be 46 neutrons (80 - 34 = 46) Note: There is no isotope Selenium-30 as originally asked in the question.
Rn-222
28SiSilicon-14The nuclear symbol and hyphen notation for 26 protons and 30 neutrons is 26Fe, iron-56. A proton is a particle that has a positive charge and is found in the nucleus of an atom.
The mass number, the number that follows the hyphen at the end of an element name, is the sum of the atomic number of the element and the number of neutrons in each atom of the isotope specified by mass number. The atomic number of potassium is 19; therefore, potassium-39 contains (39 - 19) or 20 neutrons.
The electron configuration of plutonium is [Rn]5f67s2.
This symbol is Tc-99m.