1.
On the periodic table what is the symbol for hydrogen?
Correct Answer
A. H
Explanation
Hydrogen is represented by the symbol H on the periodic table. This symbol is derived from the Latin name for hydrogen, "hydrogenium." Hydrogen is the lightest and most abundant element in the universe, making up about 75% of its elemental mass. It is a colorless, odorless, and highly flammable gas. Hydrogen has atomic number 1, indicating that it has one proton in its nucleus. It is the first element on the periodic table and belongs to the alkali metals group.
2.
On the periodic table, what chemical does Fr represent?
Correct Answer
B. Francium
Explanation
Fr represents the chemical element Francium on the periodic table. Francium is a highly radioactive element and is the second rarest naturally occurring element. It is part of the alkali metal group and is located in the seventh period of the periodic table. Francium has the symbol Fr and the atomic number 87. It is a highly reactive metal and is rarely found in nature.
3.
On the periodic table what is the symbol for Lithium?
Correct Answer
B. Li
Explanation
Lithium is represented by the symbol Li on the periodic table. Each element on the periodic table is assigned a unique symbol, typically based on the first letter or letters of its name. In the case of Lithium, the symbol "Li" is derived from the first two letters of its name.
4.
On the periodic table what chemical does W represent?
Correct Answer
C. Tungsten
Explanation
W represents tungsten on the periodic table. Tungsten is a chemical element with the symbol W, derived from its German name "Wolfram." It is a transition metal known for its high melting point and density. Tungsten is commonly used in various applications, including the production of filaments in incandescent light bulbs and electrical contacts in high-temperature environments.
5.
On the periodic table what is the symbol for sodium?
Correct Answer
C. Na
Explanation
The symbol for sodium on the periodic table is Na.
6.
On the periodic table, what chemical does Ne represent?
Correct Answer
B. Neon
Explanation
Neon is represented by the chemical symbol Ne on the periodic table. Neon is a noble gas that is colorless, odorless, and tasteless. It is known for its bright red-orange glow when used in signs and lighting. Neon is also used in lasers, television tubes, and cryogenic refrigeration. It is the fifth most abundant element in the universe and is obtained through the fractional distillation of liquid air.
7.
On the periodic table, what is the symbol for potassium?
Correct Answer
C. K
Explanation
Potassium is represented by the symbol K on the periodic table. The symbol for an element is a shorthand way of representing its name. In this case, the symbol K comes from the Latin word "kalium," which is the origin of the element's name. Therefore, K is the correct symbol for potassium on the periodic table.
8.
On the periodic table, what chemical does Au represent?
Correct Answer
A. Gold
Explanation
Au represents the chemical element gold on the periodic table. Gold is a highly valued metal known for its lustrous yellow appearance and its various uses in jewelry, electronics, and dentistry. It is a dense and malleable metal that does not tarnish or corrode easily, making it highly desirable. The symbol "Au" comes from the Latin word for gold, "aurum."
9.
On the periodic table what is the symbol for rubidium?
Correct Answer
C. Rb
Explanation
Rubidium is a chemical element with the symbol Rb on the periodic table. Therefore, the correct symbol for rubidium is Rb.
10.
On the periodic table, what chemical does Rn represent?
Correct Answer
A. Radon
Explanation
Rn represents Radon on the periodic table. Radon is a chemical element with the atomic number 86 and is a member of the noble gases group. It is a colorless, odorless, and tasteless gas that is radioactive. Radon is formed as a decay product of uranium and thorium present in the Earth's crust. It is known for its potential health hazards, as prolonged exposure to high levels of radon can increase the risk of lung cancer.
11.
On the periodic table what is the symbol for cesium?
Correct Answer
A. Cs
Explanation
Cesium is a chemical element with the symbol Cs. It is a soft, silvery-gold alkali metal that belongs to Group 1 of the periodic table. Cesium is highly reactive and easily forms compounds with other elements. It has various applications, including in atomic clocks, electronics, and the oil industry. Therefore, the symbol Cs correctly represents cesium on the periodic table.
12.
On the periodic table what chemical does Ir represent?
Correct Answer
B. Iridium
Explanation
Ir on the periodic table represents the chemical element Iridium. Iridium is a dense, corrosion-resistant metal that is commonly used in various applications, including spark plugs, electrical contacts, and as a catalyst in chemical reactions. It is also known for its use in jewelry and as a coating for optical devices.
13.
On the periodic table what is the symbol for Osmium?
Correct Answer
B. Os
Explanation
Osmium is a chemical element with the symbol Os on the periodic table. This symbol is derived from the Latin word "osme" meaning "smell" because osmium compounds have a pungent odor. Osmium is a dense and hard metal that is primarily used in alloys for electrical contacts and fountain pen tips. It is also used in the production of certain types of glass, as well as in the field of medicine for staining biological tissues.
14.
On the periodic table what chemical does Tl represent?
Correct Answer
B. Thallium
Explanation
Tl represents the chemical element Thallium on the periodic table. Thallium is a soft, malleable metal that is highly toxic. It is commonly used in electronics, optical lenses, and as a rat poison. Its atomic number is 81, and it belongs to the group 13 elements. Thallium has a bluish-gray color and is known for its ability to easily form compounds with other elements.