ATOMIC STRUCTURE Flashcards
1
Q
A
2
Q
Define
Monoatomic element
A
The elements in which molecules contain only one atom.
Examples Cu, Ag, He, etc
3
Q
Define
Diatomic elements
A
The elements in which each molecule contains two atoms.
Examples H2, O2, N2, etc.
4
Q
Define
Polyatomic elements
A
The elements in which each molecule contains more than two atoms.
Example - O3, P4, S8
5
Q
Write the chemical formula of
Baking Soda
A
NaHCO3
6
Q
Write the chemical formula of
xxxxxxx
A
KNO3
7
Q
Write the chemical formula of
Ammonium chloride
A
xxx
8
Q
Write the chemical formula of
Washing Soda
A
Na2CO3
9
Q
Write the symbol of
Boron
A
B
10
Q
Write the symbol of
Carbon
A
C
11
Q
Write the symbol of
Fluorine
A
F
12
Q
Write the symbol of
Hydrogen
A
H
13
Q
Write the symbol of
Iodine
A
I
14
Q
Write the symbol of
Nitrogen
A
N
15
Q
Write the symbol of
Oxygen
A
O
16
Q
Write the symbol of
Phosphorus
A
P
17
Q
Write the symbol of
Sulphur
A
S
18
Q
Write the symbol of
Vanadium
A
V
19
Q
Write the symbol of
Uranium
A
U
20
Q
Write the symbol of
Aluminium
A
Al
21
Q
Write the symbol of
Arsenic
A
As
22
Q
Write the symbol of
Argon
A
Ar
23
Q
Write the symbol of
Barium
A
Ba
24
Q
Write the symbol of
Beryllium
A
Be
25
# Write the symbol of
Bromine
Br
26
# Write the symbol of
Bismuth
Bi
27
# Write the symbol of
Calcium
Ca
28
# Write the symbol of
Cadmium
Cd
29
# Write the symbol of
Chromium
Cr
30
# Write the symbol of
Chlorine
Cl
31
# Write the symbol of
Cobalt
Co
32
# Write the symbol of
Palladium
Pd
33
# Write the symbol of
Platinum
Pt
34
# Write the symbol of
Selenium
Se
35
# Write the symbol of
Silicon
Si
36
# Write the symbol of
Strontium
Sr
37
# Write the symbol and the Parent name of
Sodium
Na
Natrium (Greek)
38
# Write the symbol and the Parent name of
Potassium
K
Kalium (Latin)
39
# Write the symbol and the Parent name of
Iron
Fe
Ferrum (Latin)
40
# Write the symbol and the Parent name of
Copper
Cu
Cuprum (Latin)
41
# Write the symbol and the Parent name of
Silver
Ag
Argentum (Latin)
42
# Write the symbol and the Parent name of
Gold
Au
Aurum (Latin)
43
# Write the symbol and the Parent name of
Mercury
Hg
Hydrargyrum (Greek)
44
# Write the symbol and the Parent name of
Lead
Pb
Plumbum (Latin)
45
# Write the symbol and the Parent name of
Tin
Sn
Stannum (Latin)
46
# Write the symbol and the Parent name of
Antimony
Sb
Stibium (Greek)
47
# Write the symbol and the Parent name of
Tungsten
W
Wolfram (German)
48
# Short Q&A
The term atom has been coined by the Greek philosophers.
Name the Indian philosopher who named it **Paramanu**.
Maharishi Kannada
49
# Short Q&A
Protons are positively **charged particles.**
What is the charge of one proton?
+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
# Define
Unit positive Charge (+1)
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
# Define
Atomic mass unit
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
# Short Q&A
1.67 x 10-27 kg is the weight of \_\_\_\_\_\_\_\_\_.
a proton
53
# Short Q&A
What is taken as a unit negative charge?
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
# Short Q&A
-1.6 x 10-19 coulombs is the charge of which sub-atomic particle?
Electron
55
# Short Q&A
What is the weight of an electron?
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
# Define
Mass number
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
# Define
Atomic number
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
# Short Q&A
How the number of neutrons is calculated?
The difference between the mass number and the atomic number gives the number of neutrons
59
# What is the atomic number and electronic configuration of
Hydrogen
1
K - 1
60
# What is the atomic number and electronic configuration of
Helium
2
K - 2
61
# What is the atomic number and electronic configuration of
Lithium
3
K - 2, L - 1
62
# What is the atomic number and electronic configuration of
Beryllium
4
K - 2, L - 2
63
# What is the atomic number and electronic configuration of
Boron
5
K - 2, L - 3
64
# What is the atomic number and electronic configuration of
Carbon
6
K - 2, L - 4
65
# What is the atomic number and electronic configuration of
Nitrogen
7
K - 2, L - 5
66
# What is the atomic number and electronic configuration of
Oxygen
8
K - 2, L - 6
67
# What is the atomic number and electronic configuration of
Fluorine
9
K - 2, L -7
68
# What is the atomic number and electronic configuration of
Neon
10
K - 2, L - 8
69
# What is the atomic number and electronic configuration of
Sodium
11
K - 2,
L - 8
M - 1
70
# What is the atomic number and electronic configuration of
Magnesium
12
K - 2
L - 8
M - 2
71
# What is the atomic number and electronic configuration of
Aluminium
13
K - 2
L - 8
M - 3
72
# What is the atomic number and electronic configuration of
Silicon
14
K - 2
L - 8
M - 4
73
# What is the atomic number and electronic configuration of
Phosphorus
15
K - 2
L - 8
M - 5
74
# What is the atomic number and electronic configuration of
Sulphur
16
K - 2
L - 8
M - 6
75
# What is the atomic number and electronic configuration of
Chlorine
17
K - 2
L - 8
M - 7
76
# What is the atomic number and electronic configuration of
Argon
18
K - 2
L - 8
M - 8
77
# What is the atomic number and electronic configuration of
Potassium
19
K - 2
L - 8
M - 8
N - 1
78
# What is the atomic number and electronic configuration of
Calcium
20
K - 2
L - 8
M - 8
N - 2
79
# What is the atomic number and electronic configuration of
Scandium
21
K - 2
L - 8
M - 9
N - 2
80
# What is the atomic number and electronic configuration of
Titanium
22
K - 2
L - 8
M - 10
N - 2
81
# What is the atomic number and electronic configuration of
Vanadium
23
K - 2
L - 8
M - 11
N - 2
82
# What is the atomic number and electronic configuration of
Chromium
24
K - 2
L - 8
M - 13
N - 1
83
# What is the atomic number and electronic configuration of
Manganese
25
K - 2
L - 8
M - 13
N - 2
84
# What is the atomic number and electronic configuration of
Iron
26
K - 2
L - 8
M - 14
N 2
85
# What is the atomic number and electronic configuration of
Cobalt
27
K - 2
L - 8
M - 15
N - 2
86
# What is the atomic number and electronic configuration of
Nickel
28
K - 2
L - 8
M - 16
N - 2
87
# What is the atomic number and electronic configuration of
Copper
29
K - 2
L - 8
M - 18
N - 1
88
# What is the atomic number and electronic configuration of
Zinc
30
K - 2
L - 8
M - 18
N - 2
89
# Calculate the number of neutrons
15X31
31 - 15 = 16
90
# Calculate the number of neutrons in
92U235
235 - 92 = 143
91
# Calculate the number of neutrons in
19K39
39 - 19 = 20
92
# Define
Octet
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
# Define
Valency
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
