Week 1 : Assignment 1

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09/07/2020 Basics in Inorganic Chemistry - - Unit 3 - Week 1

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Unit 3 - Week 1

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Course outline

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Week 0

Week 1 Lecture 1 : Concept of Effective Nuclear Charge (unit?

unit=1&lesson=3) Lecture 2 : Electronic Configuration of Elements (unit?

unit=1&lesson=4) Lecture 3 : Properties of Elements (Size, IE, EA and EN) (unit?

unit=1&lesson=5) Lecture 4 : Extraction of Metals (unit?

unit=1&lesson=6) Quiz : Week 1 : Assignment 1

Due on 2020-02-12, 23:59 IST.

1 point 1)

1 point 2)

1 point 3)

The due date for submitting this assignment has passed.

As per our records you have not submitted this assignment.

Which of the following configurations would you expect to have the highest second ionization energy?

1s 2s 1s 2s 2p 1s 2s 2p 3s 1s 2s 2p

No, the answer is incorrect.

Score: 0

Accepted Answers:

1s 2s 2p 3s

Which one will be the correct order of electron affinity of halogens?

At < I < Br < F < Cl At < I < Br < Cl < F F < I < Br < At < Cl At > I > Br > F < Cl No, the answer is incorrect.

Score: 0

Accepted Answers:

At < I < Br < F < Cl

According to modern periodic law, the physical and chemical properties of the element are periodic function of their

Atomic number Atomic weight

2 2

2 2 4

2 2 6 1

2 2 1

2 2 6 1

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Week 2 Week 3 Week 4

Text Transcripts (assessment?

name=32) Download Videos (unit?

unit=1&lesson=58) Weekly

Feedback (unit?

unit=1&lesson=59) 4) 1 point

1 point 5)

1 point 6)

1 point 7)

1 point 8)

Atomic size Atomic volume No, the answer is incorrect.

Score: 0

Accepted Answers:

Atomic number

All elements belonging to second period are Normal elements

Transitional Stable elements Halogens

Score: 0

Accepted Answers:

Normal elements

The correct order regarding the electronegativity of hybrid obital of carbon is:

sp> sp > sp sp<sp > sp sp<sp < sp sp> sp < sp

Score: 0

Accepted Answers:

sp> sp > sp

Which one will be the correct electronic configuration for Cr?

[Ar]3d 4s [Ar]3d 4s [Ne]3d 4s [Ar]3d 4s

Score: 0

Accepted Answers:

[Ar]3d 4s

Which statement is incorrect about the Slater’s rule.

An amount of 0.35 from each other electron within the same group except for the [1s] group, where the other electron contributes only 0.30.

If the group is of the [ns, np] type, an amount of 0.85 from each electron with principal quantum number (n–1), and an amount of 1.00 for each electron with principal quantum number (n–2) or less.

If the group is of the [d] or [f], type, an amount of 1.00 for each electron "closer" to the nucleus than the group.

All electrons in the higher principal shell contribute 0.75 to the shielding constant.

Score: 0

Accepted Answers:

All electrons in the higher principal shell contribute 0.75 to the shielding constant.

Calculate the effective nuclear charge for the 4s electron of Fe atom which has the atomic number 26 and electronic configuration

1s 2s 2p 3s 3p 3d 4s .

2 3

4 2 5 2 5 2 5 1

5 1

2 2 6 2 6 6 2

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9)

1 point 1 point 10)

3.75 6.25 2.75 3.25

Score: 0

Accepted Answers:

3.75

Calculate the effective nuclear charge for the 2p electron of F atom. (Atomic number of F is 9)

Score: 0

Accepted Answers:

(Type: Numeric) 5.20 (Type: Numeric) 5.2

Which one will be the correct increasing order of effective nuclear charge among the following elements

O, F, Ne, C, N

O<F<Ne<C<N C<N<O<F<Ne Ne>F<O<N<C F<O<C<N<Ne

Score: 0

Accepted Answers:

C<N<O<F<Ne