Periodic Table and Chemical Reactivity

As you move down a column on the periodic table atoms get bigger. This is because ____________.

• the atoms have more mass.

• the atoms have more protons.

• the atoms have more energy levels.

• the atoms have more neutrons.

As you move from left to right across a row on the periodic table atoms tend to get smaller because, ______________.

• the atoms have more mass.

• the atoms have less mass.

• the atoms have more protons.

• the atoms have less electrons.

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The atom with the largest atomic radius in Group 18 is - 

• Ar
• He
• Kr
• Rn

Elements with similar properties will likely be in the same

• row.

• column.

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Metals react by

• Losing electrons

• Gaining electrons

Which element has the largest atomic radius?

• Cesium

• Rubidium

• Francium

• Potassium

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Which element is larger than Calcium (Ca)?

• Beryllium (Be)

• Magnesium (Mg)

• Potassium (K)

• Bromine (Br)

Which of the following will have a larger radius than Zinc (Zn)?

• Gallium (Ga)

• Aluminum (Al)

• Magnesium (Mg)

• Strontium (Sr)

Tags

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As we move down a group, the atomic radius (atom size)

• increases

• decrease

• does not change

As we move from left to right across a period, the atomic radius (atom size)

• increases

• decrease

• does not change