Arrange the elements Li, Be, B, C, and N in increasing order of their first ionization enthalpies:
1. Li < B < Be < C < N 2. Li < Be < C < B < N
3. Li < Be < N < B < C 4. Li < Be < B < C < N
Subtopic:  Ionization Energy (IE) |
 75%
From NCERT
NEET - 2024
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Arrange the following elements in increasing order of electronegativity N, O, F, C, Si.
Choose the correct answer from the options given below:
1. Si < C < O < N < F 2. O < F < N < C < Si
3. F < O < N < C < Si 4. Si < C < N < O < F
Subtopic:  Electronegativity |
 78%
From NCERT
NEET - 2024
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Identify the incorrect statement:
1. The oxidation state and coordination number (or covalency) of \(\mathrm{Al}\) in\( \left[\mathrm{AlCl}\left(\mathrm{{H}_2 {O}}\right)_5\right]^{2+} \) are +3 and 6, respectively.
2. \(\mathrm{Na}_2 \mathrm{O}\) is a basic oxide and \(\mathrm{Cl}_2 \mathrm{O}_7\) is an acidic oxide
3. The following four species are called isoelectronic species: \( \mathrm{O}^{2-}, \mathrm{F}^{-}, \mathrm{Na}^{+} \mathrm{and}~ \mathrm{Mg}^{2+}\)
4. Among the four species \(\mathrm{Mg}, \mathrm{Al}, \mathrm{Mg}^{2+}\) and \(\mathrm{A l^{3+},}\) the smallest one is \(\mathrm{Al}.\)
Subtopic:  Ionization Energy (IE) |
 79%
From NCERT
NEET - 2024
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Match List-I with List-II :
List-I
(IUPAC official name)
List-II
(IUPAC Symbol)
A. Mendelevium I. Mt
B. Meitnerium II. Mc
C. Moscovium III. No
D. Nobelium IV. Md
Choose the correct answer from the options given below:
1. A-III, B-I, C-II, D-IV 2. A-IV, B-II, C-I, D-III
3. A-IV, B-I, C-II, D-III 4. A-I, B-IV, C-II, D-III
Subtopic:  Modern Periodic Table & Periodicity |
 92%
From NCERT
NEET - 2024
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The element expected to form the largest ion to achieve the nearest noble gas configuration is: 
1. Sodium(Na)  2. Oxygen(O) 
3. Fluorine(F)  4. Nitrogen(N)
Subtopic:  Atomic Size |
 56%
From NCERT
NEET - 2023
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Which one of the following represents all isoelectronic species? 
1. \(\mathrm{Na^+ , Cl^-, O^- , NO^+}\)
2. \(\mathrm{N_2O, N_2O_4 , NO^+, NO}\)
3. \(\mathrm{Na^+ , Mg^{2+} , O^- , F^-}\)
4. \(\mathrm{Ca^{2+} , Ar, K^+, Cl^-}\)
Subtopic:  Ionization Energy (IE) |
 76%
From NCERT
NEET - 2023
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Which of the following pair is correctly matched?

1. Basic oxides - \(\mathrm{In_2O_3 , K_2O , SnO_2}\)
2. Neutral oxides - \(\mathrm{CO, NO_2, N_2O}\)
3. Acidic oxides - \(\mathrm{Mn_2O_7, SO_2, TeO_3}\)
4. Amphoteric oxides -\(\mathrm{BeO , Ga_2O_3 , GeO }\)
Subtopic:  Nature of Compound |
From NCERT
NEET - 2023
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The correct sequence given below contains neutral, acidic, basic, and amphoteric oxide each, respectively is:
 
1. NO, ZnO, CO2, CaO  2. ZnO, NO, CaO, CO
3. NO, CO2, ZnO, CaO 4. NO, CO2, CaO, ZnO
Subtopic:  Nature of Compound |
 78%
From NCERT
NEET - 2023
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The IUPAC name of an element with atomic number 119 is:
1. Ununoctium 
2. Ununennium 
3. Unnilennium 
4. Unununnium
Subtopic:  Modern Periodic Table & Periodicity |
 83%
From NCERT
NEET - 2022
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Match List-I with List-II:

List-I
Elements
List-II
Atomic radii (pm)
(a) Oxygen (\(O\)) (i) 88
(b) Carbon (\(C\)) (ii) 74
(c) Boron (\(B\)) (iii) 66
(d) Nitrogen (\(N\)) (iv) 77
Choose the correct answer from the options given below:
(a) (b) (c) (d)
1. (ii) (i) (iv) (iii)
2. (iv) (iii) (ii) (i)
3. (i) (iv) (iii) (ii)
4. (iii) (iv) (i) (ii)
Subtopic:  Atomic Size |
 74%
From NCERT
NEET - 2022
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