Periods and Groups in the Periodic Table

What does it mean to go one step from left to right in the Periodic table?

• The atom on the right has one more electron shell.

• The atom on the right has one fewer electron.

• The atom on the right has one more electron.

• The atom on the right is always more reactive.

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What do we call the rows of the periodic table?

• groups

• series

• periods

• families

The period of an element tells you ....

• how many valence electrons its atoms have.

• its atomic number.

• how many electron shells its atoms have.

• its atomic mass.

What do we call the columns of the periodic table?

• valence shells

• groups

• periods

• series

What does it mean to go one step downwards in the periodic table?

• The atom on the lower row has one more valence electron.

• The atom on the lower row belongs to a different groups of elements, with different properties.

• The atom on the lower row has one more electron shell.

• The atom on the lower row is always more reactive.

Iodine is found in the fifth row and in the 17th column, which is the second column from the right. Which of the following are true?

• It has 5 electron shells and 7 valence electrons.

• It has 5 electron shells and 17 valence electrons.

• It has 7 electron shells and 5 valence electrons.

• It has 17 electron shells and 5 valence electrons.

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What do we call the elements in the column furthest to the right in the periodic table?

• Alkali metals

• Noble gases

• Halogens

• Alkaline earth metals

What's special about the element with 118 electrons?

• It is the only element that has nine electrons in its outermost shell.

• It has eight electrons in its outermost shell, but despite that it's not a noble gas.

• It has the highest number of electrons of any element that we've managed to create.

• It is the only element that has more than seven electron shells.

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Caesium is in the first column, and in the sixth row of the periodic table. Which of the following are true? Check all that apply.

• It is a non metal.

• It is an alkali metal.

• It has one valence electron.

• It is a very reactive metal.

How many protons does Lithium have?

• 3

• 4

• 7

• 10

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