Periodic Trends

Which has the greater EN: 
Cl or Al?

• Cl
• Al

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NGSS.HS-PS1-1

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

• Gallium
• Aluminum
• Magnesium
• Strontium

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NGSS.HS-PS1-1

As you move down 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 nuetrons

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NGSS.HS-PS1-1

As you move across 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.

Electronegativity is...

• how good an atom is at attracting electrons
• the ability of an atom to lose electrons
• the energy required to remove an electron from a specific atom
• how easy it is to make friends. 

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NGSS.HS-PS1-1

Ionization energy is...

• the energy required to add an electron to a specific atom
• how much energy it takes to remove an electron from an atom
• the energy required to shield the outer electrons from the nucleus
• a measure of the ability of an atom to attract electrons

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NGSS.HS-PS1-2

Which statement correctly and completely identifies a trend?

• Atomic radius decreases across a period and increases down a group.
• Electronegativity decreases across a period and decreases down a group.
• Ionization energy increases across a period and increases down a group.
• Ionic radius increases across a period and increases down a group.

The element with the largest electronegativity in the halogens is - 

• At
• F
• Cl
• Br

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NGSS.HS-PS1-1

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Which atom has the largest atomic radius?

• potassium
• rubidium 
• francium
• cesium

Which is larger:
Ca or Ca+2

• Ca
• Ca+2
• both are same size

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NGSS.HS-PS1-1