Practice Test Ch 4

What is the charge on the barium ion?

B.) 2+

Which of the following elements has an atomic number of 4?

B.) Be

What is the atomic symbol for tin?

B.) Sn

Nonmetals are located where on the periodic table?

B.) right side

How many neutrons are present in Ne-22?

C.) 12

How many electrons would be in a -2 charged anion of sulfur?

A.) 18

A fictional element has two isotopes and an atomic mass of 87.08 amu. If the first isotopes is 86 amu and the second isotopes has a mass of 90 amu. Which isotopes has the greatest natural abundance?

A.) 86 amu

Group 8A elements are also called:

A.) Noble gases

Examine the elements listed below and identify the one elements that is form a different periodic table group than the others.

A.) Ti

When an atom gains an electron, the resulting particle is called:

A.) an anion

An atom containing 7 protons, 8 neutrons, and 7 elections:

A.) is charge-neutral.

How many protons and neutrons are in Cl-37?

D.) 17 protons, 20 neutrons

A specific isotope of an element is known to have 15 protons and 16 neutrons. Which symbol would properly represent this isotope?

D.) 31/15 P

Chlorine has two stable isotopes, Cl-35 and Cl-37. If their exact masses are 34.9689 amu and 36.9695 amu, respectively, what is the natural abundance of Cl-35? (The atomic mass of chlorine is 35.45 amu)

D.) 75.95%

Which of the following is NOT a correct name, symbol combination?

E.) manganese, Mg