1.
Hydrogen
Correct Answer
A. H
Explanation
The given correct answer is "H". This is because "H" is the chemical symbol for hydrogen.
2.
Beryllium
Correct Answer
B. Be
3.
Boron
Correct Answer
A. B
Explanation
The correct answer is B. The symbol B represents the element Boron. Boron is a chemical element with atomic number 5 and is classified as a metalloid. It is a solid at room temperature and is commonly used in the production of borosilicate glass, ceramics, and as a dopant in semiconductors. The symbol B is derived from the first letter of the element's name.
4.
Carbon
Correct Answer
B. C
Explanation
The correct answer is C because in the periodic table, the symbol "C" represents the element carbon. Carbon is a chemical element with the atomic number 6 and is known for its ability to form a variety of compounds due to its unique bonding properties. It is a nonmetal and is essential for life as it is a key component of organic molecules found in all living organisms.
5.
Oxygen
Correct Answer
B. O
Explanation
The correct answer is "O" because it is the chemical symbol for oxygen.
6.
Copper
Correct Answer
B. Cu
Explanation
The correct answer is "Cu" because it is the chemical symbol for copper. Copper is a metallic element with atomic number 29 and is known for its excellent electrical conductivity and corrosion resistance. The symbol "Cu" is derived from the Latin word "cuprum."
7.
Sodium
Correct Answer
D. Na
Explanation
The correct answer is "Na" because it is the chemical symbol for sodium. The question provides a series of letters and abbreviations, and "Na" is the correct abbreviation for sodium according to the periodic table.
8.
Francium
Correct Answer
B. Fr
Explanation
Francium is a chemical element with the symbol Fr and atomic number 87. It is a highly radioactive metal and is the second rarest naturally occurring element in the Earth's crust. Francium is extremely unstable and has a very short half-life, making it difficult to study and isolate. It is classified as an alkali metal and is part of the same group as elements like sodium and potassium. Due to its rarity and high reactivity, francium has limited practical uses and is primarily used for research purposes.
9.
Silicon
Correct Answer
B. Si
Explanation
The correct answer is Si, which stands for silicon. Silicon is a chemical element with the symbol Si and atomic number 14. It is a hard, brittle crystalline solid with a blue-grey metallic lustre, and is a tetravalent metalloid and semiconductor. It is a member of group 14 in the periodic table: carbon is above it; and germanium, tin, and lead are below it. It is relatively unreactive. Because of its high chemical affinity for oxygen, it was not until 1823 that Jöns Jakob Berzelius was able to prepare it in pure form. Its compounds were generally discovered in the early 19th century.
10.
Bromine
Correct Answer
B. Br
Explanation
The correct answer is "Br" because the chemical symbol for bromine is Br. The symbols for other elements mentioned in the question, such as boron (B) and boron oxide (Bo), are not relevant to the answer.
11.
Chlorine
Correct Answer
C. Cl
Explanation
The correct answer is Cl because chlorine is represented by the symbol Cl in the periodic table.
12.
Strontium
Correct Answer
B. Sr
Explanation
Strontium is represented by the symbol Sr in the periodic table.
13.
Calcium
Correct Answer
A. Ca
Explanation
The correct answer is Ca because the chemical symbol Ca represents the element calcium. Calcium is a chemical element with the symbol Ca and atomic number 20. It is a soft gray alkaline earth metal and is the fifth-most abundant element by mass in the Earth's crust. Calcium is essential for the formation and maintenance of strong bones and teeth, as well as for normal muscle function, nerve transmission, and blood clotting.
14.
Radium
Correct Answer
B. Ra
Explanation
Radium is a chemical element with the symbol Ra. In the given options, "Ra" is the correct symbol for radium. The other options, "R" and "Rd," do not represent the symbol for radium. Therefore, the correct answer is "Ra."
15.
Cesium
Correct Answer
B. Cs
Explanation
The correct answer is Cs. Cesium is represented by the symbol Cs in the periodic table.
16.
Gold
Correct Answer
C. Au
Explanation
The chemical symbol for gold is "Au".
17.
Lithium
Correct Answer
B. Li
Explanation
The correct answer is Li because Li is the chemical symbol for lithium.
18.
Lead
Correct Answer
C. Pb
Explanation
The correct answer is "Pb" because "Pb" is the chemical symbol for lead. In the given arrangement, the letters are arranged in a way that spells out "Lead" vertically downwards. The chemical symbol for lead is "Pb", which matches the last column in the arrangement.
19.
Manganese
Correct Answer
B. Mn
Explanation
The correct answer is Mn. Manganese is a chemical element with the symbol Mn. It is a transition metal and has an atomic number of 25. The symbol "Mn" represents manganese in the periodic table.
20.
Nitrogen
Correct Answer
A. N
Explanation
Nitrogen is a chemical element with the symbol N. The given options N and Ni are the symbols for nitrogen and nickel, respectively. Since the question asks for the correct answer, which is the symbol for nitrogen, the correct answer is N.
21.
Nickel
Correct Answer
B. Ni
22.
Neon
Correct Answer
A. Ne
Explanation
Neon is a chemical element with the symbol Ne and atomic number 10. It is a noble gas that is colorless, odorless, and tasteless. The given options all represent different ways to abbreviate the symbol for neon. "Ne" is the correct abbreviation for neon, as it is the official symbol used in the periodic table. "N" and "Nn" are incorrect abbreviations and do not represent neon.
23.
Gallium
Correct Answer
B. Ga
Explanation
The correct answer is "Ga" because "Ga" is the chemical symbol for Gallium. In the periodic table, each element is represented by a unique symbol, and "Ga" represents Gallium.
24.
Aluminum
Correct Answer
B. Al
Explanation
The correct answer is "Al" which is the chemical symbol for Aluminum.
25.
Selunium
Correct Answer
B. Se
Explanation
The given sequence of letters is "Selunium" and we are asked to find the correct answer. Looking at the sequence, we can see that the letters "Se" appear in the sequence. Therefore, the correct answer is "Se".
26.
Sulfur
Correct Answer
A. S
Explanation
The correct answer is "S" because "S" is the chemical symbol for sulfur.
27.
Rubidium
Correct Answer
B. Rb
Explanation
Rubidium is represented by the chemical symbol Rb, which is derived from its Latin name "rubidus". The symbol Rb is used to identify this element in the periodic table and in chemical equations. Therefore, the correct answer is Rb.
28.
Potassium
Correct Answer
C. K
Explanation
The correct answer is K because K is the chemical symbol for potassium. The other options, P and Po, do not represent the correct symbol for potassium.
29.
Uranium
Correct Answer
A. U
Explanation
The correct answer is "U" because "U" is the chemical symbol for Uranium. The question is asking for the correct symbol for Uranium, and "U" is the only option that matches.
30.
Iodine
Correct Answer
A. I
31.
Barium
Correct Answer
B. Ba
Explanation
The symbol "Ba" represents the element Barium. In the given options, "Ba" is the only symbol that matches the element mentioned in the question. Therefore, "Ba" is the correct answer.
32.
Mercury
Correct Answer
C. Hg
Explanation
The correct answer is "Hg" because it is the chemical symbol for the element Mercury. In the periodic table, each element is represented by a unique symbol, and "Hg" is the symbol specifically assigned to Mercury.
33.
Helium
Correct Answer
B. He
Explanation
The correct answer is "He" because "He" is the chemical symbol for helium. Helium is a colorless, odorless, and tasteless gas that is the second lightest element in the periodic table. It is commonly used in balloons, as well as in cryogenics, medical imaging, and other industrial applications.
34.
Iron
Correct Answer
C. Fe
Explanation
The correct answer is "Fe" because "Fe" is the chemical symbol for iron.
35.
Cobalt
Correct Answer
B. Co
Explanation
The correct answer is Co. Cobalt is represented by the chemical symbol Co in the periodic table.
36.
Fluorine
Correct Answer
A. F
Explanation
The correct answer is F because "Fluorine" is commonly represented by the symbol "F" in the periodic table.
37.
Zinc
Correct Answer
B. Zn
Explanation
Zn is the chemical symbol for the element zinc. In the periodic table, each element is represented by a unique symbol, and in this case, Zn represents zinc. Therefore, Zn is the correct answer.
38.
Magnesium
Correct Answer
B. Mg
Explanation
The correct answer is Mg, which is the chemical symbol for Magnesium. Chemical symbols are used to represent elements in the periodic table, and Mg is the symbol specifically assigned to Magnesium.
39.
Arsenic
Correct Answer
C. As
Explanation
The correct answer is "As" because "As" is the chemical symbol for arsenic. Chemical symbols are used to represent elements in the periodic table, and "As" specifically represents the element arsenic.
40.
Phosphorus
Correct Answer
A. P
Explanation
The correct answer is "P" because it is the chemical symbol for phosphorus. The question provides different representations of the element's symbol, including the full name "Phosphorus" and two abbreviated forms "Ph" and "Ps." Among these options, "P" is the correct symbol for phosphorus according to the periodic table.
41.
Krypton
Correct Answer
B. Kr
Explanation
The correct answer is "Kr" because Krypton is a chemical element with the symbol Kr in the periodic table. The symbol represents the element's name in a concise and standardized way.
42.
Argon
Correct Answer
B. Ar
Explanation
Argon is a chemical element with the symbol Ar, which is the correct answer given in the options. The other options, A and Ag, do not represent the symbol for Argon.
43.
Silver
Correct Answer
C. Ag
Explanation
Ag is the chemical symbol for silver in the periodic table. Therefore, Ag is the correct answer for the given question.
44.
Tin
Correct Answer
C. Sn
Explanation
The chemical symbol for tin is Sn.
45.
Xenon
Correct Answer
B. Xe