Periodic Trends

Ions are formed when atoms gain or lose ___.

• electrons

• protons

• neutrons

• atomic mass

Which statement is true?

• Cations are negatively charged ions.

• Anions are positively charged ions.

• Cations are positively charged electrons.

• Anions are negatively charged ions.

As you move down a Group on the periodic table, what happens to the size of the atoms?

• they stay the same

• they get larger

• they get smaller

As you move across a row on the periodic table, what generally happens to the atomic radius?

• it decreases

• it increases

• it stays the same

What property is being measured in this diagram?

• Density

• Electronegativity

• Atomic Radius

• Atomic Mass

How does electron shielding affect the overall size of the atom?

• makes the nucleus stronger

• makes the atom larger

• makes the atom smaller

• makes the atom nuetral

What causes the shielding effect inside an atom?

• the electrons between the nucleus and the valence shell

• the extra neutrons in the nucleus

• the extra protons in the nucleus

• the valence electrons only

Which of the following atoms has the largest atomic radius?

• nitrogen

• phosphorus

• potassium

• cesium

Which of the following atoms is the most electronegative?

• barium

• cesium

• fluorine

• carbon

If a potassium atom lost one electron, it becomes an ion. What would be the symbol for that ion?

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