The radial probability distribution curve obtained for an orbital wave function has 3 peaks and 2 radial nodes. The valence electron of which one of the following metals does this wave function (Ψ) corresponds to

1. Cu

2. Li

3. K

4. Na

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Correct Answer :

Explanation :
No Explanation available for this question

In a hydrogen atom, the electron is at a distance of 4.768 A from the nucleus. The angular momentum of the electron is:

1. 3h/2π

2. h/2π

3. h/π

4. 2h/π

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Correct Answer :

3h/2π

Explanation :
No Explanation available for this question

The incorrect order of second ionization energies in the following is:

1. Rb > K

2. Na > Mg

3. Cr > Mn

4. S > P

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Correct Answer :

Rb > K

Explanation :
No Explanation available for this question

The correct order of magnitude of bond angles among the compounds CH4, NH3 and H2O is:

1. CH4 < H2O < NH3

2. H2O < NH3 < CH4

3. NH3 < CH4 < H2O

4. NH3 < H2O < CH4

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Correct Answer :

H2O < NH3 < CH4

Explanation :
No Explanation available for this question

Molecular orbital theory was proposed by:

1. Lewis

2. Mulliken

3. Slater

4. Pauling

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Correct Answer :

Mulliken

Explanation :
No Explanation available for this question

0.14 g of an element on combustion gives 0.28 g of its oxide. What is that element

1. Nitrogen

2. Carbon

3. Fluorine

4. Sulphur

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Correct Answer :

Sulphur

Explanation :
No Explanation available for this question

Equal weights of methane and oxygen are mixed in an empty container at 250C the fraction of the total pressure exerted by oxygen is:

1. 1/2

2. 2/3

3. 1/4

4. 1/3

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Correct Answer :

1/3

Explanation :
No Explanation available for this question

Which one of the following 1.0 x 10-3 molal aqueous solutions has the heighest boiling point

1. Aluminium (III) Chloride

2. Lead (II) nitrate

3. Sodium chloride

4. Magnesium nitrate

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Correct Answer :

Aluminium (III) Chloride

Explanation :
No Explanation available for this question

What is the volume of 0.1 M H2SO4 required in liters to neutralize completely 1 liter of a solution containing 20 g of NaOH

1. 5.0

2. 0.5

3. 2.5

4. 10.0

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Correct Answer :

2.5

Explanation :
No Explanation available for this question

If the solution of copper sulphate in which copper rod is immersed, is diluted 100 times, what is the change in electrode potential (Reduction)

1. Increases by 29.5 mV

2. decreases by 29.5 mV

3. Increases by 59.0 mV

4. decreases by 59.0mV

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Correct Answer :

decreases by 59.0mV

Explanation :
No Explanation available for this question

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