Identify the wrong statement in the following.
- Amongst isoelectronic species, smaller the positive charge on the cation, smaller is the ionic radius
- Amongst isoelectronic species, greater the negative charge on the anion, larger is the ionic radius
- Atomic radius of the elements increases as one moves down the first group of the periodic table
- Atomic radius of the elements decreases as one moves across from left to right in the 2nd period of the periodic table
The Correct Option is A
Solution and Explanation
Top Questions on Classification of elements and periodicity in properties
- Which of the following ions is the strongest oxidizing agent? (Atomic Number of Ce = 58, Eu = 63, Tb = 65, Lu = 71)
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- According to molecular orbital theory, which of the following statement is not correct?
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- The correct formula of borax is Na\(_2\)[B\(_4\)O\(_5\)(OH)\(_x\)]·yH\(_2\)O. The sum of \(x\) and \(y\) is:
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The organic halide, which does not undergo hydrolysis by SN1 mechanism is:
Option 1: C6H5CH2Cl
Option 2: CH2CH - CH2Cl
Option 3: (CH3)3C - Cl
Option 4: CH3 - CH = CH - Cl
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- Observe the following compounds/ions: \[ H_3BO_3, \, [B(OH)_4]^-, \, BH_4^-, \, [BCI_3 \cdot NH_3], \, SiO_4^{2-} \] The number of compounds/ions with tetrahedral shape is:
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Questions Asked in NEET exam
- Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R :
Assertion A : FSH acts upon ovarian follicles in female and Leydig cells in male.
Reason R : Growing ovarian follicles secrete estrogen in female while interstitial cells secrete androgen in male human being.
In the light of the above statements, choose the correct answer from the options given below :- NEET (UG) - 2024
- human reproduction
- Given below are two statements:
Statement I: Mitochondria and chloroplasts both double membranes bound organelles.
Statement II: Inner membrane of mitochondria is relatively less permeable, as compared chloroplast. I
In the light of the above statements, choose the mis appropriate answer from the options given below- NEET (UG) - 2024
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- Match List I with List II
List-I
(Reaction)List-II
(Reagents/Condition)(A) 
(I) 
(B) 
(II) CrO3 (C) 
(III) KMnO4/KOH, \(\Delta\) (D) 
(IV) (i) O3
(ii) Zn-H2O
Choose the correct answer from the options given below:- NEET (UG) - 2024
- Chemical Reactions
If the monochromatic source in Young's double slit experiment is replaced by white light,
1. There will be a central dark fringe surrounded by a few coloured fringes
2. There will be a central bright white fringe surrounded by a few coloured fringes
3. All bright fringes will be of equal width
4. Interference pattern will disappear- NEET (UG) - 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:- NEET (UG) - 2024
- Modern Periodic Law And The Present Form Of The Periodic Table
Concepts Used:
Haloalkanes and Haloarenes - Classification
Classification of Haloalkanes and Haloarenes are as follows:
Haloalkanes and Haloarenes are Classified on the Basis of the Number of Halogen Atoms:
These are further classified as mono, di, or polyhalogen (tri-,tetra-, etc.) compounds depending on whether they contain one, two or more halogen atoms in their structures. For example;
- Monohaloalkane
- Dihaloalkane
- Trihaloalkane
Haloalkanes and Haloarenes are Classified on Compounds Containing sp3 C—X Bond (X= F, Cl, Br, I)
This class includes:
- Alkyl halides or haloalkanes (R—X)
- Allylic halides
- Benzylic halides
Haloalkanes and Haloarenes are Classified on Compounds Containing sp2 C—X Bond
This class includes:
- Vinylic halides
- Aryl halides