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WorksheetsValence Electrons, Ions & Periodic Trends
Total questions: 23
Worksheet time: 12mins
How many valence electrons do group 1 (1A) elements have?
1
2
4
8
How many valence electrons do group 2 (2A) elements have?
1
2
4
8
How many valence electrons do group 13 (3A) elements have?
1
3
8
13
How many valence electrons do group 14 (4A) elements have?
2
4
8
14
How many valence electrons do group 15 (5A) elements have?
2
15
8
5
How many valence electrons do group 16 (6A) elements have?
6
8
16
2
How many valence electrons do group 17 (7A) elements have?
2
3
7
17
How many valence electrons do MOST group 18 (8A) elements have?
2
8
18
20
Which noble gas (group 18) has only 2 valence electrons?
argon
krypton
helium
neon
Positive ions are formed when atoms...
gain electrons.
lose electrons.
share electrons.
Negative ions are formed when atoms...
gain electrons.
lose electrons.
share electrons.
Which group tends to form 1+ charged ions?
1 (1A)
2 (2A)
11
17 (7A)
Which group tends to form 2+ charged ions?
1 (1A)
2 (2A)
12
16 (6A)
Which group tends to form 3+ charged ions?
1 (1A)
3
13 (3A)
15 (5A)
Which group tends to form 3- charged ions?
1 (1A)
3
13 (3A)
15 (5A)
Which group tends to form 2- charged ions?
1 (1A)
2 (2A)
12
16 (6A)
Which group tends to form 1- charged ions?
1 (1A)
2 (2A)
11
17 (7A)
Going left to right across a period on the periodic table, atomic radius (size) tends to...
increase
decrease
remain the same
Going left to right across a period on the periodic table, electronegativity tends to...
increase
decrease
remain the same
Going top to bottom down a group, atomic size tends to...
increase
decrease
remain the same
Going top to bottom down a group, electronegativity tends to...
increase
decrease
remain the same
Which is bigger?
sodium atom (Na)
sodium ion (Na+)
Which is bigger?
fluorine atom (F)
fluorine ion (F-)
