Question

directions: use a periodic table to find the information asked for below:

1. what is the atomic number of:

calcium____
iron _____
gold_____
uranium_____

1. what is the atomic mass of:

calcium____
iron______
uranium______
copper______

1. how many protons do the following have?

calcium____
gold_______
copper_______
iron_______

1. how many electrons do the following have?

gold____
iron______
copper______
uranium______

1. does mercury have more protons and electrons than tin?
2. is mercury a heavier element than tin?
3. does potassium have more electrons than neon?
4. does hydrogen have more electrons than uranium?
5. which has more protons, sulfur or iodine?
6. write the symbols or the names for each of these elements:

chlorine ________________
copper ________________
potassium ________________
silver ________________
na ________________
sn ________________
zn ________________
helium _______________
iron ________________
p ________________
ne ________________
mercury _______________

Explanation:

Question 1: Atomic Number

Step 1: Recall the atomic number (number of protons) from the periodic table.

• Calcium (Ca): Atomic number is 20.
• Iron (Fe): Atomic number is 26.
• Gold (Au): Atomic number is 79.
• Uranium (U): Atomic number is 92.

Question 2: Atomic Mass

Step 1: Recall the atomic mass (average mass of atoms) from the periodic table.

• Calcium (Ca): Atomic mass is approximately 40.08.
• Iron (Fe): Atomic mass is approximately 55.85.
• Uranium (U): Atomic mass is approximately 238.03.
• Copper (Cu): Atomic mass is approximately 63.55.

Question 3: Number of Protons

Step 1: Remember that the number of protons equals the atomic number.

• Calcium (Ca): Atomic number 20, so 20 protons.
• Gold (Au): Atomic number 79, so 79 protons.
• Copper (Cu): Atomic number 29, so 29 protons.
• Iron (Fe): Atomic number 26, so 26 protons.

Question 4: Number of Electrons

Step 1: In a neutral atom, the number of electrons equals the number of protons (atomic number).

• Gold (Au): Atomic number 79, so 79 electrons.
• Iron (Fe): Atomic number 26, so 26 electrons.
• Copper (Cu): Atomic number 29, so 29 electrons.
• Uranium (U): Atomic number 92, so 92 electrons.

Question 5: Mercury vs. Tin (Protons and Electrons)

Step 1: Find atomic numbers (protons = electrons in neutral atoms).

• Mercury (Hg): Atomic number 80.
• Tin (Sn): Atomic number 50.

Step 2: Compare. 80 > 50, so mercury has more protons and electrons.

Question 6: Mercury vs. Tin (Heavier Element)

Step 1: Check atomic masses.

• Mercury (Hg): Atomic mass ~200.59.
• Tin (Sn): Atomic mass ~118.71.

Step 2: Compare. 200.59 > 118.71, so mercury is heavier.

Question 7: Potassium vs. Neon (Electrons)

Step 1: Find atomic numbers (electrons in neutral atoms).

• Potassium (K): Atomic number 19.
• Neon (Ne): Atomic number 10.

Step 2: Compare. 19 > 10, so potassium has more electrons.

Question 8: Hydrogen vs. Uranium (Electrons)

Step 1: Find atomic numbers (electrons in neutral atoms).

• Hydrogen (H): Atomic number 1.
• Uranium (U): Atomic number 92.

Step 2: Compare. 1 < 92, so hydrogen does not have more electrons.

Question 9: Sulfur vs. Iodine (Protons)

Step 1: Find atomic numbers (protons = atomic number).

• Sulfur (S): Atomic number 16.
• Iodine (I): Atomic number 53.

Step 2: Compare. 53 > 16, so iodine has more protons.

Question 10: Element Symbols/Names

Step 1: Recall element symbols and names.

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

Final Answers:

1. Atomic Number:

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

1. Atomic Mass:

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

1. Number of Protons:

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

1. Number of Electrons:

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

1. Does mercury have more protons and electrons than tin? Yes.

1. Is mercury a heavier element than tin? Yes.

1. Does potassium have more electrons than neon? Yes.

1. Does hydrogen have more electrons than Uranium? No.

1. Which has more protons, sulfur or iodine? Iodine.

1. Element Symbols/Names:

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

Answer:

Question 1: Atomic Number

Step 1: Recall the atomic number (number of protons) from the periodic table.

• Calcium (Ca): Atomic number is 20.
• Iron (Fe): Atomic number is 26.
• Gold (Au): Atomic number is 79.
• Uranium (U): Atomic number is 92.

Question 2: Atomic Mass

Step 1: Recall the atomic mass (average mass of atoms) from the periodic table.

• Calcium (Ca): Atomic mass is approximately 40.08.
• Iron (Fe): Atomic mass is approximately 55.85.
• Uranium (U): Atomic mass is approximately 238.03.
• Copper (Cu): Atomic mass is approximately 63.55.

Question 3: Number of Protons

Step 1: Remember that the number of protons equals the atomic number.

• Calcium (Ca): Atomic number 20, so 20 protons.
• Gold (Au): Atomic number 79, so 79 protons.
• Copper (Cu): Atomic number 29, so 29 protons.
• Iron (Fe): Atomic number 26, so 26 protons.

Question 4: Number of Electrons

Step 1: In a neutral atom, the number of electrons equals the number of protons (atomic number).

• Gold (Au): Atomic number 79, so 79 electrons.
• Iron (Fe): Atomic number 26, so 26 electrons.
• Copper (Cu): Atomic number 29, so 29 electrons.
• Uranium (U): Atomic number 92, so 92 electrons.

Question 5: Mercury vs. Tin (Protons and Electrons)

Step 1: Find atomic numbers (protons = electrons in neutral atoms).

• Mercury (Hg): Atomic number 80.
• Tin (Sn): Atomic number 50.

Step 2: Compare. 80 > 50, so mercury has more protons and electrons.

Question 6: Mercury vs. Tin (Heavier Element)

Step 1: Check atomic masses.

• Mercury (Hg): Atomic mass ~200.59.
• Tin (Sn): Atomic mass ~118.71.

Step 2: Compare. 200.59 > 118.71, so mercury is heavier.

Question 7: Potassium vs. Neon (Electrons)

Step 1: Find atomic numbers (electrons in neutral atoms).

• Potassium (K): Atomic number 19.
• Neon (Ne): Atomic number 10.

Step 2: Compare. 19 > 10, so potassium has more electrons.

Question 8: Hydrogen vs. Uranium (Electrons)

Step 1: Find atomic numbers (electrons in neutral atoms).

• Hydrogen (H): Atomic number 1.
• Uranium (U): Atomic number 92.

Step 2: Compare. 1 < 92, so hydrogen does not have more electrons.

Question 9: Sulfur vs. Iodine (Protons)

Step 1: Find atomic numbers (protons = atomic number).

• Sulfur (S): Atomic number 16.
• Iodine (I): Atomic number 53.

Step 2: Compare. 53 > 16, so iodine has more protons.

Question 10: Element Symbols/Names

Step 1: Recall element symbols and names.

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

Final Answers:

1. Atomic Number:

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

1. Atomic Mass:

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

1. Number of Protons:

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

1. Number of Electrons:

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

1. Does mercury have more protons and electrons than tin? Yes.

1. Is mercury a heavier element than tin? Yes.

1. Does potassium have more electrons than neon? Yes.

1. Does hydrogen have more electrons than Uranium? No.

1. Which has more protons, sulfur or iodine? Iodine.

1. Element Symbols/Names:

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