Question

1. define the term isotope. 6. draw the energy level diagram for each isotope of hydrogen: hydrogen - 1 hydrogen - 2 hydrogen - 3 7. isotope notation is a way of representing a specific isotope of an element. label each part of the isotope notation for helium - 4. $ce{_{2}^{4}he}$ 8. for each of the following isotopes, write down their isotope notation. isotope name isotope notation boron - 11 sodium - 23 neon - 22 9. which isotope has 36 protons and 50 neutrons? provide its name and isotope notation. name isotope notation

Explanation:

1. Isotopes are atoms of the same element that have the same number of protons but different numbers of neutrons.
2. Drawing energy - level diagrams for hydrogen isotopes involves representing the electron in its respective energy level. Hydrogen - 1 has 1 proton and 0 neutrons, Hydrogen - 2 (deuterium) has 1 proton and 1 neutron, and Hydrogen - 3 (tritium) has 1 proton and 2 neutrons. The electron occupies the lowest energy level (n = 1). However, as this is a text - based response, actual diagrams cannot be provided.
3. In the isotope notation $_{2}^{4}\text{He}$, the sub - script 2 represents the atomic number (number of protons), and the super - script 4 represents the mass number (sum of protons and neutrons).
4. Boron has an atomic number of 5. For Boron - 11, the isotope notation is $_{5}^{11}\text{B}$. Sodium has an atomic number of 11. For Sodium - 23, the isotope notation is $_{11}^{23}\text{Na}$. Neon has an atomic number of 10. For Neon - 22, the isotope notation is $_{10}^{22}\text{Ne}$.
5. The element with 36 protons is Krypton (Kr). The mass number is the sum of protons and neutrons, so it is 36 + 50=86. The name is Krypton - 86 and the isotope notation is $_{36}^{86}\text{Kr}$.

Answer:

1. Atoms of the same element with same protons but different neutrons.
2. Cannot draw diagrams in text, but electron in n = 1 for all hydrogen isotopes.
3. Sub - script: Atomic number (2 protons), Super - script: Mass number (4 protons + neutrons).
4. Boron - 11: $_{5}^{11}\text{B}$, Sodium - 23: $_{11}^{23}\text{Na}$, Neon - 22: $_{10}^{22}\text{Ne}$
5. Name: Krypton - 86, Isotope Notation: $_{36}^{86}\text{Kr}$