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How many electrons are allowed in the second electron shell of an atom?
mixture
8
77
2
16
compound
121
8
How many electrons are allowed in the third electron shell of an atom?
mixture
8
77
2
16
compound
121
8
When two substances are mixed together and after being shaken the two substances remain separate, this would be a:
mixture
8
77
2
16
compound
121
8
How many protons are in Iridium?
mixture
8
77
2
16
compound
121
8
How many electrons are allowed in the first electron shell of an atom?
mixture
8
77
2
16
compound
121
8
When two substances are mixed together and immediately fizzing, foaming occur, this would be a:
mixture
8
77
2
16
compound
121
8
How many neutrons are in Mercury?
mixture
8
77
2
16
compound
121
8
How many valence electrons do most atoms want to have, with the exception of Hydrogen?
mixture
8
77
2
16
compound
121
8
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