Periodic Trends Vocabulary Review

Front

How many core electrons does calcium have?

Back

18

Front

Which element has 2 valence electrons?

Back

magnesium (Mg)

Tags

NGSS.HS-PS1-1

Front

When an atom gains or loses an electron it is no longer a neutral atom but becomes a/an _____________.

Back

ion

Front

Which of the following period 5 elements would have the lowest ionization energy?

Back

Sr

Tags

NGSS.HS-PS1-1

Front

Horizontal rows on the periodic table determine _________.

Back

number of electron shells

Front

What is the definition of core electrons?

Back

Core electrons are the electrons in an atom that are not involved in chemical bonding and are located in the inner shells.

Front

What are valence electrons?

Back

Valence electrons are the electrons in the outermost shell of an atom that are involved in forming bonds.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Front

Define ionization energy.

Back

Ionization energy is the energy required to remove an electron from an atom in its gaseous state.

Front

What is the trend of ionization energy across a period?

Back

Ionization energy generally increases across a period from left to right.

Front

What is the trend of atomic radius down a group?

Back

Atomic radius generally increases down a group due to the addition of electron shells.