The correct order of size of the given species is: 

1. I > I– > I+ 2. I> I– > I
3. I > I> I 4. I– > I > I+
Subtopic:  Atomic Size |
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The correct order of the decreasing ionic radii among the following isoelectronic species is:

1. Ca2+>K+>S2->Cl-

2. Cl->S2->Ca2+>K+

3. S2->Cl->K+>Ca2+

4. K+>Ca2+>Cl->S2-

Subtopic:  Atomic Size |
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Among the following species, the smallest ion is : 

1. Na+ 2. F-
3. O2- 4. N3-
Subtopic:  Atomic Size |
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In alkaline earth metals, the properties, from the following, that will increase from Be to Ba are-

(i) Atomic radius       
(ii) Ionisation energy       
(iii) Nuclear charge

1. (i) and (ii) 2. (i) and (iii)
3. (ii) and (iii) 4. (i), (ii), and (iii)
Subtopic:  Atomic Size |
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The correct order of ionic radii is:

1. H->H+>H 
2. Na+>F->O2-
3. F->O2->Na+
4. N3->Mg2+>Al3+

Subtopic:  Atomic Size |
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The correctly matched option is:-

1. Fe+3>Fe+2 > Fe+  : Order of atomic radius 

2. O > C > B > N   : Order of ionisation energy 

3. O-2 <O- <O <O+ :  Increasing order of Zeff

4. O < N < F < Ne  :  Order of electron affinity

Subtopic:  Atomic Size |
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 The trend of atomic radius in a period and a group is :

1. Generally decreases from right to left across a period and increases down a group.
2. Generally increases from left to right across a period and decreases down a group.
3. Generally decreases from left to right across a period and increases down a group.
4. Generally remains same from left to right across a period and increases down a group.

Subtopic:  Atomic Size |
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