5. An element has 4 neutrons, 3 electrons and 3 protons. Which…

5. An element has 4 neutrons, 3 electrons and 3 protons. Which element does this describe? Is it a neutral atom, isotope, or an ion? What is the mass number? What is the net charge?

6. An element has 2 neutrons, 2 electrons and 2 protons. Which element does this describe? Is it a neutral atom, isotope, or an ion? What is the mass number? What is the net charge?

7. How many electrons do you need to add to the orbit to make a stable Beryllium atom?

5 electrons

2 electrons

3 electrons

4 electrons

8. How many protons do you need to add to the orbit to make a stable Beryllium atom?

6 protons

5 protons

3 protons

9. Which ion has +3 charge, 28 electrons, and an atomic mass of 70 amu?

⁷¹₃₂Ge⁺³

⁷⁰₃₁Ga⁺³

⁷²₃₁Ga⁺³

⁶⁹₃₁Zn⁺³

10. Identify the element that fits into each of these categories on the periodic table: Alkali metals

Iron

Lithium and Potassium

Fluorine and Iron

Antimony and Potassium

11. Identify the element that fits into each of these categories on the periodic table: Alkaline Earth Metals

Phosphorus

Strontium

Iron

Argon

12. Identify the element that fits into each of these categories on the periodic table: Noble gases

Zirconium

Sodium

Magnesium

Argon

13. Calculate the average atomic mass for the following isotopes: Boron: boron-10 (10.0129 amu) at 19.9%, boron-11 (11.0093 amu) at 80.1%.

14. Calculate the average atomic mass for the following isotopes: Lithium: lithium-6 (6.0151 amu) at 7.59%, lithium-7 (7.0160 amu) at 92.41%

15. Liv is trying to decide which molecules to use for her chemistry reaction. The first thing she has to do is find the molar mass of each of the molecules she can potentially use. Calculate the molar mass of the molecules: MgO

16. Liv is trying to decide which molecules to use for her chemistry reaction. The first thing she has to do is find the molar mass of each of the molecules she can potentially use. Calculate the molar mass of the molecules: N₂O₄

_17. The National Institute of Health (NIH) provides dietary recommendations for adults over various supplements. Convert the following recommendations for supplements over to mass or moles. Selenium is vital for thyroid gland function and DNA production. The NIH recommends 5.5 x 10^-5 g of Selenium. Convert g to molecules.

_18. The National Institute of Health (NIH) provides dietary recommendations for adults over various supplements. Convert the following recommendations for supplements over to mass or moles. You have 1.45 moles of Vitamin C (C₆H₈O₆). Convert moles to mg to determine if it matches the NIH’s daily recommendation of 75mg.

19. As a medical professional, it is very important to understand the types of radiation and wavelengths in the electromagnetic spectrum. What are the 3 properties of a wave and how are they related to each other?

20. As a medical professional, it is very important to understand the types of radiation and wavelengths in the electromagnetic spectrum. What radiations are commonly used on the human body and for what reason?

21.  Identify the shape of the sub shell and how many electrons it holds: “F” sub shell

sphere, holds 14 electrons

clover, holds 14 electrons

two clovers attached (or flower), holds 14 electrons

dumbbell, holds 12 electrons

22.  Identify which of these orbitals has the lowest energy.

2s

1s

2p

5f

23. Which of the following orbitals do not exist?

7p

3p

4s

7f

24. Which of the following orbitals do not exist?

6f

4f

1s

4s

25. State the number of TOTAL electrons and VALENCE electrons in each of the following atoms: Sn

26.  State the number of TOTAL electrons and VALENCE electrons in each of the following atoms: Ar

27.  Identify the element associated with the following electron configurations.

1s² 2s² 2p⁶ 3s² 3p²

28. Identify the element associated with the following electron configurations.

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁵

29. Write the electron configurations for the following ions

F^–

30. Write the electron configurations for the following ions

Mg²⁺