2.
Li
3.
Na
4.
K
5.
Cesium
Explanation
Cesium is a chemical element with the symbol Cs. The given answer "Cs" is the correct symbol for cesium according to the periodic table.
6.
Be
7.
Mg
8.
Calcium
9.
Strontium
10.
Barium
11.
Ra
12.
Boron
Explanation
The correct answer is B because Boron is the chemical symbol for the element boron. Chemical symbols are used to represent elements in the periodic table and are typically one or two letters long. In this case, B is the symbol that represents boron.
13.
Aluminium
Explanation
Aluminium is a chemical element with the symbol Al. It is a silvery-white, lightweight metal that is commonly used in various industries due to its low density and high corrosion resistance. Aluminium is the third most abundant element in the Earth's crust and is widely used in the production of construction materials, electrical wiring, and packaging materials. Its properties make it a versatile and valuable material in many applications. Therefore, the correct answer for this question is Al, which is the chemical symbol for aluminium.
14.
Carbon
Explanation
The correct answer is C because carbon is represented by the symbol C in the periodic table.
15.
Si
16.
Sn
17.
Lead
18.
Nitrogen
Explanation
The correct answer is N because Nitrogen is the chemical symbol for the element nitrogen. In the periodic table, each element is represented by a unique symbol, and N is the symbol for nitrogen.
19.
Phosphorus
Explanation
The correct answer is P because phosphorus is represented by the chemical symbol P.
20.
Arsenic
21.
Oxygen
22.
Sulfur
Explanation
Sulfur is represented by the symbol S.
23.
F
24.
Cl
25.
Bromine
Explanation
Bromine is a chemical element with the symbol Br. It is a halogen and is found in the periodic table. The answer "Br" represents the symbol for bromine.
26.
Iodine
Explanation
Iodine is a chemical element with the symbol I.
27.
Helium
28.
Ne
29.
Ar
30.
Krypton
31.
Xe
Explanation
Xe is the chemical symbol for the element Xenon. Therefore, the correct answer is Xenon, as it is the full name of the element represented by the symbol Xe.
32.
Rn
Explanation
Radon is a chemical element with the symbol Rn. It is a radioactive, colorless, odorless, tasteless noble gas. Therefore, the correct answer is Radon.
33.
Cr
Explanation
Chromium is a chemical element with the symbol Cr. It is a hard, lustrous, steel-gray metal that is commonly used in the production of stainless steel and other alloys. Chromium has a high melting point and is resistant to corrosion, making it ideal for applications where durability and resistance to wear are important. It is also used in the production of pigments, dyes, and tanning agents. Overall, chromium is a versatile element with various industrial uses.
34.
Ti
35.
Mn
36.
Iron
Explanation
The given answer "Fe" is the correct symbol for the element iron. Iron is a chemical element with the symbol Fe, derived from its Latin name "ferrum". It is a metal that is commonly found in the Earth's crust and has various industrial applications due to its strength and ability to form alloys.
37.
Co
38.
Ni
39.
Cu
Explanation
The given answer "Copper" is correct because "Cu" is the chemical symbol for copper. Copper is a reddish-brown metal that is a good conductor of electricity and is commonly used in electrical wiring, plumbing, and various industrial applications. Its symbol "Cu" comes from its Latin name "cuprum".
40.
Cadmium
Explanation
Cadmium is a chemical element with the symbol Cd. The answer "Cd" is the correct symbol for cadmium.
41.
Silver
42.
Gold
Explanation
The correct answer is "Au" because "Au" is the chemical symbol for gold. In the periodic table, chemical elements are represented by symbols, and "Au" is the symbol specifically assigned to gold.
43.
Pt
44.
Zinc
Explanation
Zinc is a chemical element with the symbol Zn. The given answer "Zn" is the correct symbol for zinc.
45.
Mercury
46.
U
47.
Pu