Q1 Easy
What is the electron configuration of Magnesium (Mg)?
A [Ne] 3s¹ B [Ne] 3s² C [Ne] 3p² D [Ne] 3s² 3p¹
Q2 Easy
In the p-block, which group contains elements that are generally non-metallic and form acidic oxides?
A Group 13 B Group 15 C Group 17 D Group 18
Q3 Easy
In the reaction 2H₂ + O₂ → 2H₂O, how many moles of water are produced from 4 moles of hydrogen gas?
A 2 moles B 4 moles C 8 moles D 1 mole
Q4 Easy
Which of the following elements belongs to the s-block of the periodic table?
A Sodium (Na) B Iron (Fe) C Chlorine (Cl) D Copper (Cu)
Q5 Easy
When calcium (Ca) reacts with oxygen (O₂), the product formed is:
A CaO B Ca₂O C CaO₂ D Ca₂O₃
Q6 Easy
Which p-block element forms a diatomic molecule and exhibits allotropy with forms like white, red, and black phosphorus?
A Sulfur B Phosphorus C Arsenic D Nitrogen
Q7 Easy
Which element belongs to Group 17 (Halogens) and Period 3?
A Fluorine B Chlorine C Bromine D Iodine
Q8 Easy
Which of the following is NOT an isotope of hydrogen?
A Protium B Deuterium C Tritium D Helium
Q9 Easy
Which position does hydrogen occupy in the periodic table?
A Group 1, Period 1 B Group 17, Period 1 C Group 2, Period 1 D Group 13, Period 2
Q10 Easy
What is the oxidation state of hydrogen in the compound H₂O₂ (hydrogen peroxide)?
A +1 B +2 C -1 D -2
Q11 Easy
Which property correctly describes the s-block elements?
A They are all non-metals B They have high ionization energies C They are highly reactive and form ionic compounds by losing valence electrons D They form covalent bonds exclusively
Q12 Easy
Which of the following represents the correct order of increasing atomic radius in the s-block?
A Na < K < Li B Li < Na < K C K < Na < Li D Na < Li < K
Q13 Easy
Which of the following p-block elements has the highest electronegativity?
A Fluorine B Chlorine C Oxygen D Nitrogen
Q14 Easy
What is the electronic configuration of Boron (B), a p-block element?
A 1s² 2s² 2p¹ B 1s² 2s¹ 2p² C 1s² 2s² 2p² D 1s¹ 2s² 2p²
Q15 Easy
The element with the highest electronegativity value in the periodic table is:
A Chlorine B Fluorine C Oxygen D Nitrogen
Q16 Easy
Atomic radius generally increases down a group because:
A Nuclear charge decreases B Number of electron shells increases C Effective nuclear charge increases D Valence electrons are more tightly bound
Q17 Easy
Which of the following elements is a transition metal with atomic number 26?
A Iron (Fe) B Cobalt (Co) C Nickel (Ni) D Copper (Cu)
Q18 Easy
What is the atomic number of hydrogen?
A 1 B 2 C 3 D 0
Q19 Easy
Which period of the periodic table contains the first lanthanide series element?
A Period 5 B Period 6 C Period 7 D Period 4
Q20 Easy
Which of the following p-block elements is a noble gas with a complete octet configuration and zero electronegativity?
A Neon B Argon C Krypton D All of the above
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