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IIT CHEMISTRY > ATOMIC STRUCTURE > Flashcards

ATOMIC STRUCTURE Flashcards

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1
Q
A
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2
Q

Define

Monoatomic element

A

The elements in which molecules contain only one atom.

Examples Cu, Ag, He, etc

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3
Q

Define

Diatomic elements

A

The elements in which each molecule contains two atoms.

Examples H2, O2, N2, etc.

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4
Q

Define

Polyatomic elements

A

The elements in which each molecule contains more than two atoms.

Example - O3, P4, S8

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5
Q

Write the chemical formula of

Baking Soda

A

NaHCO3

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6
Q

Write the chemical formula of

xxxxxxx

A

KNO3

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7
Q

Write the chemical formula of

Ammonium chloride

A

xxx

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8
Q

Write the chemical formula of

Washing Soda

A

Na2CO3

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9
Q

Write the symbol of

Boron

A

B

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10
Q

Write the symbol of

Carbon

A

C

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11
Q

Write the symbol of

Fluorine

A

F

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12
Q

Write the symbol of

Hydrogen

A

H

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13
Q

Write the symbol of

Iodine

A

I

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14
Q

Write the symbol of

Nitrogen

A

N

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15
Q

Write the symbol of

Oxygen

A

O

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16
Q

Write the symbol of

Phosphorus

A

P

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17
Q

Write the symbol of

Sulphur

A

S

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18
Q

Write the symbol of

Vanadium

A

V

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19
Q

Write the symbol of

Uranium

A

U

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20
Q

Write the symbol of

Aluminium

A

Al

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21
Q

Write the symbol of

Arsenic

A

As

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22
Q

Write the symbol of

Argon

A

Ar

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23
Q

Write the symbol of

Barium

A

Ba

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24
Q

Write the symbol of

Beryllium

A

Be

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25
Q

Write the symbol of

Bromine

A

Br

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26
Q

Write the symbol of

Bismuth

A

Bi

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27
Q

Write the symbol of

Calcium

A

Ca

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28
Q

Write the symbol of

Cadmium

A

Cd

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29
Q

Write the symbol of

Chromium

A

Cr

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30
Q

Write the symbol of

Chlorine

A

Cl

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31
Q

Write the symbol of

Cobalt

A

Co

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32
Q

Write the symbol of

Palladium

A

Pd

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33
Q

Write the symbol of

Platinum

A

Pt

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34
Q

Write the symbol of

Selenium

A

Se

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35
Q

Write the symbol of

Silicon

A

Si

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36
Q

Write the symbol of

Strontium

A

Sr

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37
Q

Write the symbol and the Parent name of

Sodium

A

Na

Natrium (Greek)

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38
Q

Write the symbol and the Parent name of

Potassium

A

K

Kalium (Latin)

39
Q

Write the symbol and the Parent name of

Iron

A

Fe

Ferrum (Latin)

40
Q

Write the symbol and the Parent name of

Copper

A

Cu

Cuprum (Latin)

41
Q

Write the symbol and the Parent name of

Silver

A

Ag

Argentum (Latin)

42
Q

Write the symbol and the Parent name of

Gold

A

Au

Aurum (Latin)

43
Q

Write the symbol and the Parent name of

Mercury

A

Hg

Hydrargyrum (Greek)

44
Q

Write the symbol and the Parent name of

Lead

A

Pb

Plumbum (Latin)

45
Q

Write the symbol and the Parent name of

Tin

A

Sn

Stannum (Latin)

46
Q

Write the symbol and the Parent name of

Antimony

A

Sb

Stibium (Greek)

47
Q

Write the symbol and the Parent name of

Tungsten

A

W

Wolfram (German)

48
Q

Short Q&A

The term atom has been coined by the Greek philosophers.

Name the Indian philosopher who named it Paramanu.

A

Maharishi Kannada

49
Q

Short Q&A

Protons are positively charged particles.

What is the charge of one proton?

A

+1.6 x 10-19 Coulombs

or

+4.8 x 10-10 esu

The charge of one proton is taken as unit positive charge (+1)

50
Q

Define

Unit positive Charge (+1)

A

The charge of one proton is taken as a unit positive charge.

+1.6 x 10-19 coulombs

or

+4.8 x 10-10 esu

51
Q

Define

Atomic mass unit

A

The mass of one proton is taken as 1 atomic mass unit (amu).

The mass of one proton is 1.67 x 10-27 kg.

52
Q

Short Q&A

1.67 x 10-27 kg is the weight of _________.

A

a proton

53
Q

Short Q&A

What is taken as a unit negative charge?

A

The charge of one electron is taken as one unit negative charge (-1).

1.6 x 10-19 coulombs

or

-4.8 x 10-10 esu

54
Q

Short Q&A

-1.6 x 10-19 coulombs is the charge of which sub-atomic particle?

A

Electron

55
Q

Short Q&A

What is the weight of an electron?

A

The weight of an electron is very negligible.

9.1 x 10-31 Kg is the weight of an electron i.e.

1/1837 times that of the proton.

56
Q

Define

Mass number

A

The mass number of an element indicates the sum of protons (p) and neutrons (n) present inside the nucleus.

The mass number is denoted by the symbol A

57
Q

Define

Atomic number

A

The number of protons present inside the nucleus is called the atomic number.

It is equal to the number of electrons in the atom.

The atomic number of an element is denoted by the symbol Z

58
Q

Short Q&A

How the number of neutrons is calculated?

A

The difference between the mass number and the atomic number gives the number of neutrons

59
Q

What is the atomic number and electronic configuration of

Hydrogen

A

1

K - 1

60
Q

What is the atomic number and electronic configuration of

Helium

A

2

K - 2

61
Q

What is the atomic number and electronic configuration of

Lithium

A

3

K - 2, L - 1

62
Q

What is the atomic number and electronic configuration of

Beryllium

A

4

K - 2, L - 2

63
Q

What is the atomic number and electronic configuration of

Boron

A

5

K - 2, L - 3

64
Q

What is the atomic number and electronic configuration of

Carbon

A

6

K - 2, L - 4

65
Q

What is the atomic number and electronic configuration of

Nitrogen

A

7

K - 2, L - 5

66
Q

What is the atomic number and electronic configuration of

Oxygen

A

8

K - 2, L - 6

67
Q

What is the atomic number and electronic configuration of

Fluorine

A

9

K - 2, L -7

68
Q

What is the atomic number and electronic configuration of

Neon

A

10

K - 2, L - 8

69
Q

What is the atomic number and electronic configuration of

Sodium

A

11

K - 2,

L - 8

M - 1

70
Q

What is the atomic number and electronic configuration of

Magnesium

A

12

K - 2

L - 8

M - 2

71
Q

What is the atomic number and electronic configuration of

Aluminium

A

13

K - 2

L - 8

M - 3

72
Q

What is the atomic number and electronic configuration of

Silicon

A

14

K - 2

L - 8

M - 4

73
Q

What is the atomic number and electronic configuration of

Phosphorus

A

15

K - 2

L - 8

M - 5

74
Q

What is the atomic number and electronic configuration of

Sulphur

A

16

K - 2

L - 8

M - 6

75
Q

What is the atomic number and electronic configuration of

Chlorine

A

17

K - 2

L - 8

M - 7

76
Q

What is the atomic number and electronic configuration of

Argon

A

18

K - 2

L - 8

M - 8

77
Q

What is the atomic number and electronic configuration of

Potassium

A

19

K - 2

L - 8

M - 8

N - 1

78
Q

What is the atomic number and electronic configuration of

Calcium

A

20

K - 2

L - 8

M - 8

N - 2

79
Q

What is the atomic number and electronic configuration of

Scandium

A

21

K - 2

L - 8

M - 9

N - 2

80
Q

What is the atomic number and electronic configuration of

Titanium

A

22

K - 2

L - 8

M - 10

N - 2

81
Q

What is the atomic number and electronic configuration of

Vanadium

A

23

K - 2

L - 8

M - 11

N - 2

82
Q

What is the atomic number and electronic configuration of

Chromium

A

24

K - 2

L - 8

M - 13

N - 1

83
Q

What is the atomic number and electronic configuration of

Manganese

A

25

K - 2

L - 8

M - 13

N - 2

84
Q

What is the atomic number and electronic configuration of

Iron

A

26

K - 2

L - 8

M - 14

N 2

85
Q

What is the atomic number and electronic configuration of

Cobalt

A

27

K - 2

L - 8

M - 15

N - 2

86
Q

What is the atomic number and electronic configuration of

Nickel

A

28

K - 2

L - 8

M - 16

N - 2

87
Q

What is the atomic number and electronic configuration of

Copper

A

29

K - 2

L - 8

M - 18

N - 1

88
Q

What is the atomic number and electronic configuration of

Zinc

A

30

K - 2

L - 8

M - 18

N - 2

89
Q

Calculate the number of neutrons

15X31

A

31 - 15 = 16

90
Q

Calculate the number of neutrons in

92U235

A

235 - 92 = 143

91
Q

Calculate the number of neutrons in

19K39

A

39 - 19 = 20

92
Q

Define

Octet

A

The atoms of some elements are found to possess eight electrons in their outermost shell.

This condition is called Octet and the resultant electronic configuration is called octet configuration.

Example - Inert gases or noble gases namely neon, argon, krypton, xenon, and radon possess the octet configuration.

93
Q

Define

Valency

A

The number of electrons gained or lost by an atom of an element for attaining the stable octet or duplet configuration is called valency.

94
Q
A

IIT CHEMISTRY (1 decks)

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