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13 The formula for the maximum number of electrons in an energy level is a) 2n b) n² c) 2n² d) n plus 2
c) 2n²
12 What does the term principal energy level refer to a) The atom’s nucleus b) The shell number n c) The orbital’s shape d) The number of neutrons
b) The shell number n
11 Which orbitals have dumbbell shapes a) s b) p c) d d) f
b) p
10 Which orbital is spherical in shape a) s orbital b) p orbital c) d orbital d) f orbital
a) s orbital
9 The d subshell can hold a maximum of how many electrons a) 6 b) 8 c) 10 d) 14
c) 10
8 The p subshell contains how many orbitals a) 1 b) 3 c) 5 d) 7
b) 3
7 What are the types of subshells a) s p d f b) a b c d c) n l m s d) 1 2 3 4
a) s p d f
6 Each orbital can hold up to a) 1 electron b) 2 electrons c) 4 electrons d) 6 electrons
b) 2 electrons
5 The second energy level can hold a maximum of a) 2 electrons b) 4 electrons c) 8 electrons d) 18 electrons
c) 8 electrons
4 The first energy level can hold a maximum of a) 1 electron b) 2 electrons c) 8 electrons d) 18 electrons
b) 2 electrons
3 The quantum mechanical model describes electrons as a) Particles in circular paths b) Clouds of probability c) Stationary around the nucleus d) Moving randomly
b) Clouds of probability
2 In the Bohr model electrons move in fixed paths called a) Orbitals b) Orbits c) Clouds d) Fields
b) Orbits
1 Who proposed the quantum mechanical model of the atom a) Niels Bohr b) John Dalton c) Erwin Schrödinger d) JJ Thomson
c) Erwin Schrödinger
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