2. fill in the blank: mostly arranged the first periodic table by increasing 3. what elements would have…

2. fill in the blank: mostly arranged the first periodic table by increasing 3. what elements would have similar properties to fluorine (f)? a. oxygen and nitrogen b. iodine and bromine c. neon and oxygen d. sulfur and phosphorous 4. refer to the periodic table below and answer the questions that follow. which letters represent alkali metals? which letters represent good conductors? which letters represent halogens? which letters represent elements with 1 valence electron? which letter represents an element with similar properties as letter a? which letters represent alkaline earth metals? which letters represent transition metals? 5. compare carbon vs germanium: which has a greater shielding effect? which has a larger radius? which has a greater ionization energy? which has a greater electronegativity? which has more energy levels? 6. element a and b are in the same period. element a has 6 valence electrons and element b has 4 valence electrons. which would have a smaller radius (size)? a. element b because it has few valence electrons. b. element a because it has a greater shielding effect. c. element a because it has more electrons create a stronger pull towards the nucleus. d. element b because it has a greater shielding effect.

2. fill in the blank: mostly arranged the first periodic table by increasing 3. what elements would have similar properties to fluorine (f)? a. oxygen and nitrogen b. iodine and bromine c. neon and oxygen d. sulfur and phosphorous 4. refer to the periodic table below and answer the questions that follow. which letters represent alkali metals? which letters represent good conductors? which letters represent halogens? which letters represent elements with 1 valence electron? which letter represents an element with similar properties as letter a? which letters represent alkaline earth metals? which letters represent transition metals? 5. compare carbon vs germanium: which has a greater shielding effect? which has a larger radius? which has a greater ionization energy? which has a greater electronegativity? which has more energy levels? 6. element a and b are in the same period. element a has 6 valence electrons and element b has 4 valence electrons. which would have a smaller radius (size)? a. element b because it has few valence electrons. b. element a because it has a greater shielding effect. c. element a because it has more electrons create a stronger pull towards the nucleus. d. element b because it has a greater shielding effect.

Answer

Explanation:

Step1: Recall periodic - table trends

Atomic radius decreases across a period. Ionization energy and electronegativity increase across a period. Shielding effect is related to the number of inner - shell electrons.

Step2: Identify elements in the periodic table

Carbon is in period 2 and group 14, Germanium is in period 4 and group 14.

Step3: Analyze trends for Carbon and Germanium

Germanium has more electron levels, so it has a larger radius and greater shielding effect. Carbon has a greater ionization energy and electronegativity as it has fewer electron levels and a stronger pull on outer - electrons.

Step4: Analyze element A and B

Since they are in the same period, the one with fewer valence electrons (B) has a larger radius due to less effective nuclear charge on outer electrons.

Step5: Identify element types in the periodic table

Alkali metals are in group 1, alkaline earth metals in group 2, halogens in group 17, and transition metals in the d - block.

Answer:

  1. a. Oxygen and nitrogen are in the same period, nitrogen has 7 protons and oxygen has 8 protons. Oxygen has a greater electronegativity as it has a stronger pull on electrons. b. Iodine and bromine are in the same group (group 17, halogens), they have similar properties as they have the same number of valence electrons. c. Neon is a noble gas and oxygen is a non - metal in the same period, they have different properties. d. Sulfur and phosphorus are in the same period, sulfur has a greater electronegativity.
  2. Alkali metals: G; Alkaline earth metals: D; Halogens: A; Good conductors (many metals are good conductors, transition metals are good conductors): E; Elements with 1 valence electron: G; Elements with similar properties as A (A is a halogen): C; Transition metals: H.
  3. Carbon vs Germanium: Germanium has a larger radius and greater shielding effect, Carbon has a greater ionization energy and electronegativity.
  4. Element A has 6 valence electrons and element B has 4 valence electrons. Element B has a larger radius as it has less effective nuclear charge on outer electrons since they are in the same period. So element B because it has fewer valence electrons.