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Elements and the periodic table - supersize Flashcards | StudBud
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Elements and the periodic table - supersize
Elements and the periodic table - supersize
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Unit 1 Chemistry
Flashcards
35 cards
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Practice quiz
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Questions
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Answers
1
What does the atomic number tell you?
How many atoms are in a compound
The number of neutrons in an atom
How many atoms are in the universe
The number of protons found in the nucleus of an atom
2
How many neutrons does this isotope have?
6
9
8
7
3
Electronegativity is
the tendency of an atom to attract electrons.
the force by which one object attracts another.
a compound made up of non-metals.
shows the structural arrangement of atoms in compounds.
4
The electronic configuration of the phosphide ion(P
3-
) is
[Ne]3s2
[Ne]3s23p1
[Ne]3s23p6
[Ne]3s23p3
5
An isotope contains:
Different number of protons than the original element
More atomic orbitals than the original element
Different number of neutrons than the original element
Different number of electrons than the original element
6
State the electronic configuration of sodium
atom
.
2.8
2.1
2.8.1
2.8.8.3
7
The image shows the electronic configuration of Argon (Ar). Argon belongs to
Group 8
Group 18
Group 2
Group 1
8
The atomic number of this atom is
10
4
3
7
9
The mass number is
THE NUMBER OF PROTONS & ELECTRONS
THE NUMBER OF PROTONS & NEUTRONS
THE NUMBER OF PROTONS
THE NUMBER OF PROTONS & NUCLEUS
10
What is the electronic configuration of a Cr atom?
[Kr] 4s1 3d5
[Ar] 3d6
[Ar] 4s1 3d5
[Ar] 4s2 3d4
11
Electronic Configuration of Sm
3+
ion?
[Xe] 4f5
[Xe] 6s2 4f3
[Xe] 6s1 4f4
[Xe] 6s2 4f6
12
The most electronegative element in this list is:
F
Na
C
O
13
State the electronic configuration of chloride
ion
.
2.8.8
2.7
2.8.7
2.8
14
First ionisation energy...
decreases across a period, increases down a group.
increases across a period, decreases down the group.
increases across a period, increases down a group.
decreases across a period, decreases down the group.
15
Of the following elements, which has the highest electronegativity?
S
Cl
Si
Rb
16
The mass number of this atom is
4
10
3
7
17
What is the electronic configuration of Krypton?
[Ar]4s24p64d10
1s22s22p63s23p64s23d104p6
1s22s22p63s23p63d104s24p6
1s22s23s23p64s23d104p6
18
Magnesium-25 has ____ protons and ______ neutrons
25,12
25,13
12,25
12,13
19
What is the ground state electronic configuration for this atom?
2,8,8
2,8,8,1
2,8,7,2
2,8,8,8
20
How many neutrons are in the nucleus of the following atom:
61
155
108
47
21
Of the following elements, which has the largest atomic radius?
Be
N
C
Li
22
Which has the strongest electronegativity?
Oxygen
Fluorine
Chlorine
Hydrogen
23
In terms of trends in the periodic table, electronegativity:
Decreases across a period
Increases across a period
24
The image shows the electronic configuration of Lithium (Li). Lithium belongs to
Group 4
Group 2
Group 1
Group 8
25
The ground state electron configuration of Ga is _____.
D
C
B
A
26
The element with the highest first ionisation energy is:
Cl
Si
S
Na
27
What is the trend in reactivity as you go down group 1?
The elements get less reactive
There is no pattern in reactivity of the group 1 elements
The group 1 elements are unreactive
The elements get more reactive
28
What is the electronic configuration of K
+
?
[Ar] 4s1
[Ar] 4s2
[Ne] 3s2 3p6
[Ne] 3s2 3p5
29
Which is the electronic configuration of Cu?
1s22s22p63s23p63d94s2
1s22s22p63s23p63d54s1
1s22s22p63s23p63d104s1
1s22s22p63s23p63d94s1
30
State the electronic configuration of sodium
ion
.
2.8.1
2.8
2.1
2.8.8.3
31
Of the following elements, which has the largest atomic radius?
Br
F
I
Cl
32
Which electronic configuration represents a transition metal?
[Ne]3s2
[Ar]3d54s2
1s2 2s2 2p5
[Ar]3d104s24p6
33
As we go
down
Group 7, the general trend is that reactivity
decreases
stays the same
increases
increases then decreases
34
An ion had the following electronic configuration and a charge of +2. The ion is
Ca2+
Ga2+
Fe2+
Mg2+
35
State the electronic configuration of chlorine
atom
.
2.7
2.8.7
2.8.8
2.8
