Fall Semester Exam Review (test grade)

Front

What is the electron configuration for an atom with 8 electrons?

Back

1s² 2s² 2p⁴

Front

How many electrons does an atom with the electron configuration 1s² 2s² 2p⁶ have?

Back

10

Front

What are significant figures?

Back

Digits in a number that contribute to its precision.

Front

How do you determine the mass number of an atom?

Back

Add the number of protons and neutrons.

Front

What is the mass number of an atom with 10 protons and 15 neutrons?

Back

25

Front

What is the electron configuration for Zinc?

Back

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰

Front

What is the total number of electrons in an atom with the configuration 1s² 2s² 2p⁴?

Back

8

Front

How many significant figures are in the number 0.00750?

Back

3

Front

What is the electron configuration for an atom with 10 electrons?

Back

1s² 2s² 2p⁶

Front

What is the definition of an atom?

Back

The smallest unit of matter that retains the properties of an element.