8.1. Ions http://www.ck12.org
- State the number of protons and electrons in each of the following ions.
a. K+
b. F−
c. P^3 −
d. Ti^4 +
e. Cd^2 +
f. Cr^3 + - What is wrong with this statement? “When a chlorine atom gains an electron, it becomes an argon atom.”
- Why can the majority of transition metals form 2+ ions?
- What is a pseudo noble gas electron configuration?
Problems
- How many electrons must each of the atoms below lose to achieve a noble gas electron configuration?
a. Li
b. Sr
c. Al
d. Ba - Write the symbol of the most common ion formed by each element in problem 6, and name the noble gas with
which each ion is isoelectronic. - How many electrons must each of the atoms below gain to achieve a noble gas electron configuration?
a. Br
b. S
c. N
d. I - Write the symbol of the most common ion formed by each element in problem 8, and name the noble gas with
which each ion is isoelectronic. - Write electron configurations for each of the following atoms. Then write the symbol for the most common
ion each would form and the electron configuration of that ion.
a. Be
b. Cl
c. Se
d. Rb - Write electron configurations for the following ions.
a. Cs+
b. Y^3 +
c. Ni^2 +
d. As^3 −
e. Te^2 −
f. Ag+
g. Pb^4 +
h. Mn^2 + - For each ion in problem 11, state whether it has (1) a noble gas configuration, (2) a pseudo noble gas
configuration, or (3) neither. - Split the following ions into isoelectronic groups by noble gas: O^2 −, Sr^2 +, Ca^2 +, H−, V^5 +, I−, Ba^2 +, Na+,
S^2 −, Al^3 +, La^3 +, Li+, As^3 −.