The recently discovered element, Meitnerium (Z= 109) belongs

1.  s-block

2.  p-block

3.  d-block

4.  f-block

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4
Correct Answer :

d-block


Explanation :
No Explanation available for this question

Rn (Z=86) is the last noble gas discovered. Predict what will be the atomic number of the next noble gas to be discovered

1.  94

2.  102

3.  118

4.  None of these

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4
Correct Answer :

118


Explanation :
No Explanation available for this question

Unitary theory implied that all element were made up of

1.  Protons, electrons and neutrons

2.  H atoms

3.  Nucleus

4.  a-tomio

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4
Correct Answer :

H atoms


Explanation :
No Explanation available for this question

The scientist responsible for addition of zero group to the Mendeleev's original periodic table was

1.  Ramsay

2.  Rutherford

3.  Bohr

4.  Planck

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4
Correct Answer :

Rutherford


Explanation :
No Explanation available for this question

Which of the following grouping represents a collection of isoelectronic species  (At. No : Cs = 55, Br = 35

1.  N3-,F-,Na+

2.  Be, Al3+,Cl-

3.  Ca2+,Cs+,Br

4.  Na+,Cs2+,Mg2+

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4
Correct Answer :

N3-,F-,Na+


Explanation :
No Explanation available for this question

Considering the elements F, CI, O and N, the correct order of their chemical reactivity in terms of oxidising property is

1.  F > CI > O > N

2.  F >O > CI > N

3.  CI > F > O > N

4.  O > F > N > CI

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4
Correct Answer :

F > CI > O > N


Explanation :
No Explanation available for this question

Which of the following configuration is expected to have maximum difference in second and third ionisation enthalpies

1.  1s22s22p2

2.  1s22s22p63s1

3.  1s22s22p63s2

4.  1s22s22p1

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4
Correct Answer :

1s22s22p2


Explanation :
No Explanation available for this question

Which of the following are p-block elements

1.  N

2.  CI

3.  P

4.  All of the these

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4
Correct Answer :

All of the these


Explanation :
No Explanation available for this question

Which one of the following arrangement represents the correct order of electron gain enthalpy (with negative sign) of the given atomic species

1.  S < O < CI < F

2.  CI < F < S < O

3.  F < CI < O < S

4.  O < S < F < CI

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4
Correct Answer :

O < S < F < CI


Explanation :
No Explanation available for this question

Which of the following is not a transition metal

1.  Silver

2.  Lead

3.  Tungsten

4.  Manganese

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4
Correct Answer :

Lead


Explanation :
No Explanation available for this question
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