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20 questions
Atomic number of sodium
12
13
11
14
Number of electrons in the outer most orbit of an atom is called
Valency
Valence electrons
Atomic number
None of the above
'Kernel' according to lewis is
Atom
Nucleus and outermost electrons
Nucleus and innermost electrons
Nucleus only
What charge would an aluminum ion have?
5+
3+
3-
5-
What is an ion with a positive (+) charge called?
anion
cation
molecule
salt
When an atom loses an electron, it becomes a:
positive ion
negative ion
neutral ion
neutral atom
Ionic bonds form between:
two metals
two nonmetals
metals and nonmetals
metalloids
Which types of elements typically become cations?
nonmetals
metals
When two atoms share electrons, a chemical bond is formed. This type of bond is called:
covalent bond
ionic bond
metallic bond
hydrogen bond
What types of atoms make a covalent bond?
two nonmetals
a metal and a nonmetal
two metals
two metalloids
How many double bonds are in a molecule of CO2?
Hint: draw a Lewis dot structure for the molecule.
1
2
3
none
Atomic Number is Calcium is
21
20
22
24
Electronic configuration of Mg is
2,8,2
2,8,8,2
2,8,3
2,8,8
Chemical bonding is
attractive force
repulsive force
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