Question

1. in the blank, label the elements or properties as metal(m), nonmetal (nm) or metalloid (met). - argon - potassium - arsenic - sodium - cobalt - radon - silicon - neon - nitrogen - chromium 2. fill in the blank: - mostly arranged the modern periodic table by increasing - arranged the first periodic table by increasing - lustrous - dull - brittle - good conductor - tend to lose valence electrons to obey octet rule - tend to gain valence electrons to obey octet rule - high melting points 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? on the periodic table to the left. 1. at the top of the group, write the oxidation # (charge) trend. 2. draw the bold line that separates metals from nonmetals. 3. draw arrows to show the atomic radii trend from nonmetals that point to the largest. 4. draw arrows to show the ie and en trends that point to the highest.

Explanation:

Step1: Recall element - property relationships

Metals are lustrous, good conductors and tend to lose valence electrons. Non - metals are dull, brittle and tend to gain valence electrons. Metalloids have intermediate properties.

Step2: Classify elements

• Metal (M): Potassium, Chromium, Sodium, Cobalt, Calcium are metals as they are lustrous, good conductors and tend to lose valence electrons.
• Non - metal (NM): Argon, Arsenic, Neon, Nitrogen, Radon are non - metals. Argon and Neon are noble gases, Nitrogen is a non - metal that gains electrons, Arsenic is a non - metal with some metalloid character, and Radon is a noble gas.
• Metalloid (met): Silicon, Antimony are metalloids with properties intermediate between metals and non - metals.

Step3: Answer question 2

Metals are lustrous and good conductors. Non - metals are dull and brittle.

Step4: Answer question 3

Elements with similar properties to Fluorine are other halogens. Iodine and Bromine are halogens like Fluorine. Elements with similar properties to Oxygen are in the same group. Sulfur and Phosphorus are in the same general area of the periodic table and have some similar chemical behavior due to their valence electron configurations.

Step5: Answer sub - questions about element types in the last part

• Alkali metals: Elements in Group 1 are alkali metals.
• Good conductors: Metals are good conductors.
• Halogens: Fluorine, Chlorine, Bromine, Iodine, Astatine are halogens.
• Elements with 1 valence electron: Alkali metals have 1 valence electron.
• Alkaline earth metals: Elements in Group 2 are alkaline earth metals.
• Transition metals: Elements in the d - block are transition metals.

Answer:

1. Metal (M): Potassium, Chromium, Sodium, Cobalt, Calcium; Non - metal (NM): Argon, Arsenic, Neon, Nitrogen, Radon; Metalloid (met): Silicon, Antimony
2. Metals are lustrous and good conductors; Non - metals are dull and brittle
3. a. Iodine and Bromine are similar to Fluorine; Sulfur and Phosphorus are somewhat similar to Oxygen

• Alkali metals: Group 1 elements
• Good conductors: Metals
• Halogens: Fluorine, Chlorine, Bromine, Iodine, Astatine
• Elements with 1 valence electron: Alkali metals
• Alkaline earth metals: Group 2 elements
• Transition metals: d - block elements