Unit Test — Unit test Answers
12 verified answers4 views
21
Free Preview
What is the predicted order of first ionization energies from highest to lowest for lithium (Li), sodium (Na), potassium (K), and rubidium (Rb)?
A
Rb > K > Na > LiB
K > Rb > Na > LiC
Li > Na > K > RbD
Rb > K > Li > Na22
Free Preview
Which is most likely true about electronegativity?
A
It tends to be the same across a period.B
It tends to be the same down a group.C
It tends to increase across a period.D
It tends to increase down a group.23
Which best describes the trends in electronegativity on the periodic table?
A
Electronegativity increases up and to the right.B
Electronegativity increases down and to the left.C
Electronegativity decreases up and to the left.D
Electronegativity decreases down and to the right.24
Chuck wants to know how many electrons in an atom are not paired up. Which model would be best for Chuck to write out?
A
a set of quantum numbers for the last electron in the atomB
a configuration with numbers, letters, and superscriptsC
a dot structure of the atomD
an orbital notation of the atom25
An atom of an element is shown by the model.How is this model useful?
A
It shows how electrons are distributed in the shells of an iron atom.B
It shows how electrons are distributed in the shells of a cobalt atom.C
It shows how orbitals are distributed in the shells of an iron atom.D
It shows how orbitals are distributed in the shells of a cobalt atom.26
Which shows the electron configuration for Silicon (Si)?
A
[Ar]4s23d104p4B
[Ar]3d14s2C
[Ne]3s23p4D
[Ne]3s23p227
The mass number of a chromium atom is 52 and it has 24 protons. How many neutrons does this atom have?
A
24B
28C
76D
80Did you find these answers helpful?
Verified answers available
TRY EDGENUITY HACKS
- Auto Complete Exams
- Auto Complete Assignments
- Skip Videos Instantly
50,000+ students using this