Chapter 17 Test Review

Front

What is the atomic number of Sodium?

Back

11

Front

How many neutrons are in a Sodium atom if its atomic mass is 22.990?

Back

12

Front

What is the atomic number of Iron?

Back

26

Front

How many electrons are in an Iron atom?

Back

26

Front

Who discovered the nucleus of the atom?

Back

Ernest Rutherford

Front

Are alkali metals more reactive than alkaline earth metals?

Back

True

Front

What is the mass number of Silver with 47 protons and 61 neutrons?

Back

108

Front

What is the definition of atomic mass?

Back

The weighted average mass of an element's isotopes.

Front

What is the definition of atomic number?

Back

The number of protons in the nucleus of an atom.

Front

What is the relationship between protons and electrons in a neutral atom?

Back

They are equal in number.