Chemistry: Periodic Trends

Front

Which of the following elements has the smallest radius? Options: Mg, Al, Si, K

Back

Si

Front

Which element in Period 2 has the greatest atomic radius? Options: Be, C, Na, Li

Back

Li

Front

Of the halogens (group 7A), which has the smallest radius? Options: F, Br, He, At

Back

F

Front

As you move across the periodic table from left to right, the atomic radius decreases. Why?

Back

the number of protons increases, so attraction to electrons increases

Front

Ionization energy is...

Back

how much energy it takes to remove an electron from an atom

Front

Electronegativity __________ from left to right within a period and __________ from top to bottom within a group.

Back

increases, decreases

Front

What are the vertical columns in the Periodic Table called?

Back

groups

Front

Atom with the largest atomic radius in Group 8A: Ar, He, Kr, Rn

Back

Rn

Front

Why does Francium (Fr) have the lowest ionization energy in Group 1?

Back

Its 1 valence electron is very far from the nucleus, so little energy is needed to remove it.

Front

Which has the greater EN: H or F?

Back

F