BE 1300 Basic Engineering II:
Materials Science for Engineering Applications
Homework 1
Q1 (20 points). Please write down the the electronic configuration for a magnesium
ion with a plus two (+2) charge:
Q2 (20 points). Atomic number equals (
a.
b.
c.
d.
the number
the number
the number
the number
)
of protons in the nucleus
of electrons in a cation
of neutrons in the nucleus
of atoms in a mole of atoms
Q3 (20 points). A metallic bond forms by (
)
a. transferring of an electron from one atom to another
b. sharing an electrons between two atoms
c. sharing electrons among all atoms
Q4 (20 points). What is the weight, in kilograms, of one nitrogen molecule
(N2)?
Q5 (20 points). What is the weight, in kilograms, of one mole of nitrogen
molecules?
Da Deng- Wayne State University
1