ºÝºÝߣ

ºÝºÝߣShare a Scribd company logo

MInooka Ions and Isotopes

?Download as PPT, PDF?
?
J
Jeanne Erfft

The document summarizes key concepts about the structure of atoms, including the nuclear model. It explains that atoms are made up of protons, neutrons, and electrons. Protons and neutrons are located in the nucleus, while electrons orbit the nucleus. The number of protons determines the element, and the total of protons and neutrons is the mass number. Atoms of the same element can have different numbers of neutrons, making them isotopes of that element.

1 of 13
Downloaded 67 times
Elements Differences in the atoms that make up the elements
Current model of the atom Nuclear atom Almost all of the mass of the atom is located in the nucleus All of the volume of the atom is made up by the electron cloud, which is mostly empty space
The Nuclear Atom
Proton Has a charge of 1+ Has a mass of approximately 1 amu (atomic mass unit) Found in the nucleus The number of protons identifies the type of atom The number of protons = the atomic number of the element
Electrons Have a charge of 1- Have a negligible mass (1/2000 of a proton) Found in the electron cloud in orbitals Are the particle of the atom that are responsible for the chemical bonds Neutral atoms have the same number of electrons as protons
Neutrons Are neutral, have no charge Have a mass of approximately 1 amu Found in the nucleus Are the particle of the atom that is responsible for isotopes
What is an Isotope? Atoms with the same number of protons (so they are the same element) But they have different numbers of neutrons Thus, they are atoms of the same element that have different masses
Two isotopes of Sodium
How do we write that? 23 11 Na
Or Na-23
Na-23 has 11 protons (atomic number) 11 electrons (neutral atom) 12 neutrons (atomic mass of 23 amu)
Na-23 is an isotope It has the same number of protons as other atoms of sodium It is a neutral atom (no charge, same number of electrons as protons) It has different number of neutrons than other sodium atoms
Atomic Numbers Atomic number is the number of protons in an atom Mass number is the sum of the number of neutrons and the number of protons in a given atom The atomic mass number on the periodic table is a weighted average mass of all known isotopes of that element

More Related Content

MInooka Ions and Isotopes

  • 1. Elements Differences in the atoms that make up the elements
  • 2. Current model of the atom Nuclear atom Almost all of the mass of the atom is located in the nucleus All of the volume of the atom is made up by the electron cloud, which is mostly empty space
  • 4. Proton Has a charge of 1+ Has a mass of approximately 1 amu (atomic mass unit) Found in the nucleus The number of protons identifies the type of atom The number of protons = the atomic number of the element
  • 5. Electrons Have a charge of 1- Have a negligible mass (1/2000 of a proton) Found in the electron cloud in orbitals Are the particle of the atom that are responsible for the chemical bonds Neutral atoms have the same number of electrons as protons
  • 6. Neutrons Are neutral, have no charge Have a mass of approximately 1 amu Found in the nucleus Are the particle of the atom that is responsible for isotopes
  • 7. What is an Isotope? Atoms with the same number of protons (so they are the same element) But they have different numbers of neutrons Thus, they are atoms of the same element that have different masses
  • 9. How do we write that? 23 11 Na
  • 11. Na-23 has 11 protons (atomic number) 11 electrons (neutral atom) 12 neutrons (atomic mass of 23 amu)
  • 12. Na-23 is an isotope It has the same number of protons as other atoms of sodium It is a neutral atom (no charge, same number of electrons as protons) It has different number of neutrons than other sodium atoms
  • 13. Atomic Numbers Atomic number is the number of protons in an atom Mass number is the sum of the number of neutrons and the number of protons in a given atom The atomic mass number on the periodic table is a weighted average mass of all known isotopes of that element