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Category: Chemistry
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Transcript
CSU CHM 1030 - Unit 5
Which one of the following is the correct mathematical expression for the inverse relationship between the frequency and wavelength of electromagnetic radiation?
Answer:
?? = c
Of the elements below, __________ is the least metallic.
Answer:
Ar
__________ have the lowest first ionization energies of the groups listed.
Answer:
Alkali metals
According to the Heisenberg Uncertainty Principle, it is impossible to know precisely both the position and the __________ of an electron.
Answer:
momentum
Which of the following electron configurations represents a violation of the Pauli Exclusion Principle?
Answer:
|? ?| |? ?| |? | | |
Atomic radius generally increases as we move __________.
Answer:
down a group and from right to left across a period
The atomic radius of main-group elements generally increases down a group because __________.
Answer:
the principal quantum number of the valence orbitals increases
Which quantum number determines the level of energy of an electron in a hydrogen atom?
Answer:
n
The photoelectric effect is __________.
Answer:
the emission of electrons by a metal when struck with light of sufficient energy
Of the following elements, __________ has the most negative electron affinity.
Answer:
F
Which equation correctly represents the first ionization of sodium?
Answer:
Na(g) ? Na+(g) + e-
Which one of the following is NOT a valid value for the magnetic quantum number of an electron in a 4d subshell?
Answer:
3
Which equation correctly represents the electron affinity of calcium?
Answer:
Ca(g)+ e- ? Ca-(g)
Of the choices below, which correctly orders the successive values for first ionization energies in a range from largest to smallest?
Answer:
Ar > Cl > S > Si > Al
In a px orbital, the subscript x denotes the __________ of the electron.
Answer:
axis along which the orbital is aligned
Of the following, which gives the correct order to show decreasing atomic radius for Mg, Na, P, Si and Ar?
Answer:
Na > Mg > Si > P > Ar
The ground state configuration of fluorine is __________.
Answer:
[He]2s22p5
Of the following, which gives the correct order to show decreasing atomic radius for Mg, Na, P, Si and Ar?
Answer:
Na > Mg > Si > P > Ar
The ground state configuration of tungsten is __________.
Answer:
[Xe]6s24f145d4
The element that has a condensed electron configuration of [Ar]4s1 is __________.
Answer:
K
Which one of the following atoms has the largest radius?
Answer:
Te
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