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Valence Electrons
Quiz 3
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Q.1
True or False: The symbol in LEDS represents the valence electrons and the dot represents the nucleus
true
false
Q.2
True or False: Atoms that have a valence electrons of less than eight are not stable.
true
false
Q.3
The elements in this group all have 3 valance electrons.
Group 13
Group 15
Group 3
Group 18
Q.4
What group of elements is the most stable? Being stable means it would not react.
Group 18
Group 17
Group 1
Group 2
Q.5
The atomic mass of Titanium isand its proton istherefore its number of neutron is ________
22
24
26
70
Q.6
Valence electrons plays a key role in chemical reactions and it increases from left to right of the periodic table.
TRUE
FALSE
Q.7
This element has 2 valance electrons and 3 electron shells.
Beryllium
Strontium
Magnesium
Calcium
Q.8
What element has 4 valance electrons and three electron energy levels (also called energy shells)?
Silicon
Carbon
Germanium
Arsenic
Q.9
This metalloid has 3 electron shells.
Boron
Silicon
Tellerium
Tin
Q.10
Which group has the greatest number of valence electrons?
1
14
18
16
0 h : 0 m : 1 s
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10
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