Periodic Table 2 Flashcards
(21 cards)
What is the reactivity trend of alkali metals as you move down the group?
Reactivity increases as you move down the group.
Which alkali metal is the most reactive?
Francium (Fr) is the most reactive alkali metal.
True or False: Alkali metals react with water to produce hydrogen gas.
True.
Fill in the blank: The general reaction of an alkali metal with water produces _____ and a metal hydroxide.
hydrogen gas
What type of reaction occurs when an alkali metal displaces another metal from a compound?
A displacement reaction.
Which halogen is the least reactive?
Astatine (At) is the least reactive halogen.
What is the general trend in reactivity of halogens as you move down the group?
Reactivity decreases as you move down the group.
True or False: Halogens can displace alkali metals from their compounds.
False.
What is the primary reason for the high reactivity of alkali metals?
They have one electron in their outermost shell, which they can easily lose.
Which halogen will displace chlorine from sodium chloride: bromine or iodine?
Bromine will displace chlorine.
Fill in the blank: The alkali metals are located in group _____ of the periodic table.
1
Which of the following is a characteristic of halogens: A) Gases at room temperature B) Metals C) Brittle solids
A) Gases at room temperature.
Short Answer: What is the result of a displacement reaction between an alkali metal and a metal salt?
The alkali metal displaces the metal in the salt, forming a new salt and releasing the displaced metal.
True or False: All alkali metals react with oxygen.
True.
What is the order of reactivity of the alkali metals from most to least reactive?
Francium, Cesium, Rubidium, Potassium, Sodium, Lithium.
Fill in the blank: The halogens are located in group _____ of the periodic table.
17
Which halogen is commonly used as a disinfectant?
Chlorine.
What is formed when a halogen reacts with a metal?
A metal halide.
Short Answer: Describe the physical state of halogens at room temperature.
Halogens exist in different physical states: fluorine and chlorine are gases, bromine is a liquid, and iodine is a solid.
Which alkali metal reacts explosively with water?
Sodium.
Fill in the blank: The most reactive halogen is _____.
Fluorine
