Periodic Table quiz

An element that is a very reactive gas is most likely a member of the...

• noble gases

• alkali metals

• halogens

• actinides

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Which of the following metals is most reactive?

• Sodium (Na)
• calcium (Ca)
• titanium (Ti)
• All metals have the same reactivity

T or F: Elements in the 18th column are unreactive.

• True

• False

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Valence electrons are...

• the total number of electrons in an atom

• the number of electrons on the first energy shell of an atom

• the number of electrons on the outermost energy shell of an atom

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Metalloids can be described as...

• same as nonmetals
• bad conductors
• characteristics of metals and nonmetals
• same as metals

Who is credited for the first Periodic Table?

• Mendeleev
• Mosely
• Dalton
• Rutherford

Which following elements has the greater electronegativity ?

• K
• F
• Fr
• Cl

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NGSS.HS-PS1-2

Atomic radius(size) generally increases as we move __________.  

• down a group and from right to left across a period 
• up a group and from left to right across a period 
• down a group and from left to right across a period 
• up a group and from right to left across a period 

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Which of the metalloids has the smallest atomic radius?

• Si

• B

• Sb

• Al

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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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