directions: use a periodic table to find the information asked for below. 1. what is the atomic number of…

directions: use a periodic table to find the information asked for below. 1. what is the atomic number of: calcium____ iron____ gold____ uranium____ 2. what is the atomic mass of: calcium____ iron____ uranium____ copper____ 3. how many protons do the following have? calcium____ gold____ copper____ iron____ 4. how many electrons do the following have? gold____ iron____ copper____ uranium____ 5. does mercury have more protons and electrons than tin? 6. is mercury a heavier element than tin? 7. does potassium have more electrons than neon? 8. does hydrogen have more electrons than uranium? 9. which has more protons, sulfur or iodine? 10. write the symbols or the names for each of these elements: chlorine____ zinc____ copper____ helium____ potassium____ iron____ silver____ p____ na____ ne____ sn____ mercury____

directions: use a periodic table to find the information asked for below. 1. what is the atomic number of: calcium____ iron____ gold____ uranium____ 2. what is the atomic mass of: calcium____ iron____ uranium____ copper____ 3. how many protons do the following have? calcium____ gold____ copper____ iron____ 4. how many electrons do the following have? gold____ iron____ copper____ uranium____ 5. does mercury have more protons and electrons than tin? 6. is mercury a heavier element than tin? 7. does potassium have more electrons than neon? 8. does hydrogen have more electrons than uranium? 9. which has more protons, sulfur or iodine? 10. write the symbols or the names for each of these elements: chlorine____ zinc____ copper____ helium____ potassium____ iron____ silver____ p____ na____ ne____ sn____ mercury____

Answer

Explanation:

Step1: Find atomic numbers from periodic table

Calcium: 20, Iron: 26, Gold: 79, Uranium: 92

Step2: Find atomic masses from periodic table

Calcium: 40.08, Iron: 55.85, Uranium: 238.03, Copper: 63.55

Step3: Recall protons = atomic number

Calcium: 20, Gold: 79, Copper: 29, Iron: 26

Step4: Recall electrons = protons in neutral atom

Gold: 79, Iron: 26, Copper: 29, Uranium: 92

Step5: Compare protons/electrons of Mercury and Tin

Mercury (Hg) atomic number 80, Tin (Sn) atomic number 50. So yes.

Step6: Compare atomic masses of Mercury and Tin

Mercury atomic mass ~200.59, Tin atomic mass ~118.71. So yes.

Step7: Compare electrons of Potassium and Neon

Potassium (K) atomic number 19, Neon (Ne) atomic number 10. So yes.

Step8: Compare electrons of Hydrogen and Uranium

Hydrogen (H) atomic number 1, Uranium (U) atomic number 92. So no.

Step9: Compare protons of Sulfur and Iodine

Sulfur (S) atomic number 16, Iodine (I) atomic number 53. Iodine has more.

Step10: Write symbols/names

Chlorine: Cl, Copper: Cu, Potassium: K, Silver: Ag, Na: Sodium, Sn: Tin, Zn: Zinc, Helium: He, Iron: Fe, P: Phosphorus, Ne: Neon, Mercury: Hg

Answer:

  1. Calcium: 20, Iron: 26, Gold: 79, Uranium: 92
  2. Calcium: 40.08, Iron: 55.85, Uranium: 238.03, Copper: 63.55
  3. Calcium: 20, Gold: 79, Copper: 29, Iron: 26
  4. Gold: 79, Iron: 26, Copper: 29, Uranium: 92
  5. Yes
  6. Yes
  7. Yes
  8. No
  9. Iodine
  10. Chlorine: Cl, Copper: Cu, Potassium: K, Silver: Ag, Na: Sodium, Sn: Tin, Zn: Zinc, Helium: He, Iron: Fe, P: Phosphorus, Ne: Neon, Mercury: Hg