Periodic Classification of Elements and Periodicity MCQ's 3
Here is another set of MCQ's from Periodic Classification of Elements and Periodicity chapter 1 chemistry Book 2.
11. Which of the following has highest first ionization potential?
(A) Carbon (B) Oxygen
(C) Nitrogen (C) Boron.
12. Which of the following has the smallest size?
(A) Na+ (B) Mg2+
(C) Al3+ (D) CI
13. Which of the following element has the maximum electron affinity?
(A) F (B) S
(C) I (D) CI.
14. Which of the following is isoelectronic as well as has the same structure as that of N2O ?
(A) N3H (B) H2O
(B) NO2 (C) CO2
15. The atomic radius increases as we move down a group because
(A) Effective nuclear charge increases
(B) Atomic mass increases
(C) Additive electrons are accommodated in new electron level
(D) Atomic number increase.
16. Which one of the following is an incorrect statement?
(A) The ionization potential of nitrogen is greater than that of chlorine
(B) The electron affinity of fluorine is greater than that of chlorine
(C) The ionization potential of beryllium is greater than that of boron
(D) The electronegativity of fluorine is greater than that of chlorine.
17. Electron affinity depends on
(A) Atomic size
(B) Nuclear charge
(C) Atomic number
(D) Atomic size and nuclear charge both.
18. Two elements whose eletronegativities are 1.2 and 3.0, the bond formed between them would be
(A) Ionic (B) covalent
(C) Coordinate (C) metallic.
19. Ionic radii are
(A) Directly proportional to square of effective nuclear charges
(B) Inversely proportional to effective nuclear charge
(C) Inversely proportional to square of effective nuclear charge
(D) Directly proportional to effective nuclear charge.
20. Which of the following oxides is atmospheric in character?
(A) CaO (B) CO2
(C) SiO2 (D) SnO2
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