Periodic Table
Q. What is the atomic mass of Oxygen approximately? (2019)
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A.
16 u
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B.
18 u
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C.
14 u
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D.
12 u
Solution
The atomic mass of Oxygen is approximately 16 u.
Correct Answer: A — 16 u
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Q. What is the atomic mass of Sodium (Na)? (2021)
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A.
22.99
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B.
23.00
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C.
24.00
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D.
25.00
Solution
The atomic mass of Sodium (Na) is approximately 22.99 u.
Correct Answer: A — 22.99
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Q. What is the atomic number of Carbon? (2021)
Solution
The atomic number of Carbon is 6, which is the number of protons in its nucleus.
Correct Answer: A — 6
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Q. What is the atomic number of Oxygen?
Solution
The atomic number of Oxygen is 8.
Correct Answer: B — 8
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Q. What is the common oxidation state of Alkaline earth metals? (2014) 2014
Solution
Alkaline earth metals commonly exhibit a +2 oxidation state.
Correct Answer: B — +2
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Q. What is the common oxidation state of Group 1 elements? (2021)
Solution
Group 1 elements commonly exhibit an oxidation state of +1.
Correct Answer: C — +1
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Q. What is the group number of Alkali metals in the periodic table? (2023)
Solution
Alkali metals are located in group 1 of the periodic table.
Correct Answer: A — 1
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Q. What is the group number of Halogens in the periodic table? (2021)
Solution
Halogens are located in group 17 of the periodic table.
Correct Answer: B — 17
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Q. What is the period number of Argon? (2020)
Solution
Argon is located in Period 3 of the periodic table.
Correct Answer: C — 4
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Q. What is the period number of Lithium in the periodic table? (2022)
Solution
Lithium is located in period 2 of the periodic table.
Correct Answer: B — 2
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Q. What is the period number of Lithium? (2016) 2016
Solution
Lithium is located in period 2 of the periodic table.
Correct Answer: B — 2
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Q. What is the period number of Sodium in the periodic table? (2017)
Solution
Sodium is in period 3 of the periodic table.
Correct Answer: C — 3
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Q. What is the symbol for Gold?
Solution
The symbol for Gold is Au.
Correct Answer: A — Au
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Q. What is the valency of Magnesium? (2015)
Solution
Magnesium has a valency of 2, as it can lose two electrons.
Correct Answer: B — 2
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Q. What is the valency of Oxygen? (2021)
Solution
Oxygen has a valency of 2, as it needs two electrons to complete its outer shell.
Correct Answer: B — 2
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Q. Which element has the atomic number 11? (2022)
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A.
Sodium
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B.
Magnesium
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C.
Potassium
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D.
Calcium
Solution
Sodium has the atomic number 11, indicating it has 11 protons.
Correct Answer: A — Sodium
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Q. Which element has the atomic number 1?
-
A.
Helium
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B.
Hydrogen
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C.
Lithium
-
D.
Beryllium
Solution
Hydrogen has the atomic number 1.
Correct Answer: B — Hydrogen
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Q. Which element has the highest atomic number in the first 20 elements? (2020)
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A.
Calcium
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B.
Potassium
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C.
Argon
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D.
Chlorine
Solution
Calcium has the highest atomic number (20) among the first 20 elements.
Correct Answer: A — Calcium
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Q. Which element has the lowest electronegativity? (2023)
-
A.
Francium
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B.
Cesium
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C.
Lithium
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D.
Sodium
Solution
Francium has the lowest electronegativity among the given elements.
Correct Answer: A — Francium
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Q. Which element is found in Group 17 of the periodic table? (2022)
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A.
Sodium
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B.
Chlorine
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C.
Calcium
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D.
Magnesium
Solution
Chlorine is found in Group 17, also known as the halogens.
Correct Answer: B — Chlorine
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Q. Which element is represented by the symbol 'Fe'? (2019)
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A.
Fluorine
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B.
Francium
-
C.
Iron
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D.
Fermium
Solution
The symbol 'Fe' stands for Iron, derived from its Latin name 'Ferrum'.
Correct Answer: C — Iron
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Q. Which element is represented by the symbol 'K'? (2022)
-
A.
Calcium
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B.
Potassium
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C.
Krypton
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D.
Iron
Solution
The symbol 'K' represents Potassium, derived from its Latin name 'Kalium'.
Correct Answer: B — Potassium
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Q. Which group in the periodic table contains the noble gases? (2023)
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A.
Group 1
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B.
Group 2
-
C.
Group 17
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D.
Group 18
Solution
Noble gases are found in Group 18 of the periodic table, characterized by their lack of reactivity due to having a full valence shell.
Correct Answer: D — Group 18
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Q. Which of the following elements is a halogen? (2017) 2017
-
A.
Bromine
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B.
Barium
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C.
Bismuth
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D.
Boron
Solution
Bromine is a halogen, located in group 17 of the periodic table.
Correct Answer: A — Bromine
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Q. Which of the following elements is a noble gas? (2021) 2021
-
A.
Oxygen
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B.
Nitrogen
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C.
Neon
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D.
Hydrogen
Solution
Neon is a noble gas, which is characterized by its lack of reactivity.
Correct Answer: C — Neon
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