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OCR A Chemistry – 'Electron Structure' 2.2.1

Authored by Michael Huang

Chemistry

12th Grade

Used 70+ times

OCR A Chemistry – 'Electron Structure' 2.2.1
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20 questions

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1.

DROPDOWN QUESTION

1 min • 1 pt

How many electrons can fill the first FOUR shells of an atom?

1st Shell = ​ (a)  

2nd Shell = ​ (b)  

3rd Shell =​ (c)  

4th Shell = ​ (d)  

2
8
18
3
4
5
6
7
9
32

Answer explanation

2.2.1(a)

REMEMBER that "each new shell includes a new sub-shell"

2.

DROPDOWN QUESTION

1 min • 1 pt

name the subshells in order that they are filled

1st to be filled =​ (a)  

2nd to be filled =​ (b)  

3rd to be filled =​ (c)  

4th to be filled =​ (d)  

s
p
d
f
g
a
b
x
y
z

3.

DROPDOWN QUESTION

1 min • 1 pt

How many electrons does each sub-shell hold?

s = ​ (a)  

p = ​ (b)  

d = ​ (c)  

f = ​ (d)  

2
6
10
14
4
1
8
18
12
16

Answer explanation

2.2.1(a) "the number of electrons that can fill the first four shells"

4.

FILL IN THE BLANK QUESTION

1 min • 1 pt

Elements are arranged into "blocks" on the periodic table.

Which block is two groups wide?

5.

FILL IN THE BLANK QUESTION

1 min • 1 pt

Elements are arranged into "blocks" on the periodic table.

Which block is 4 periods high?

6.

DROPDOWN QUESTION

1 min • 1 pt

How many orbitals does each hold

s =​ (a)  

p =​ (b)  

d =​ (c)  

f = ​ (d)  

1
3
5
7
2
6
10
14
4
8

Answer explanation

2.2.1(a) "the number of electrons that can fll the frst four shells"

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which is the best definition of an ATOMIC ORBITAL

a region around the nucleus that can hold two electrons, with opposite spins

a region around the nucleus that can hold up to two electrons, with opposite spins

an energy level in an atom that can hold up to two electrons, with opposite spins

a nuclear region that can hold up to two electrons, with opposite spins

Answer explanation

2.2.1(b)

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