Chem. Ch. 5 The Periodic Law

Front

What is the halogen with the least negative electron affinity?

Back

Astatine (At)

Front

What is the most distinctive property of noble gases?

Back

They are largely unreactive.

Front

How do electron affinity values change from left to right across a period on the periodic table?

Back

They tend to become more negative.

Front

How are elements arranged in the modern periodic table?

Back

By atomic number.

Front

Which two elements are more likely to have the same charge on their ions?

Back

Tin (Sn) and Silicon (Si).

Front

Define electron affinity.

Back

The energy change that occurs when an electron is added to a neutral atom.

Front

What is the periodic law?

Back

The properties of elements are periodic functions of their atomic numbers.

Front

What are noble gases?

Back

Elements in Group 18 of the periodic table that are largely unreactive due to their full valence shell.

Front

What is the significance of atomic number in the periodic table?

Back

It determines the identity of an element and its position in the periodic table.

Front

What trend is observed in atomic radius across a period?

Back

Atomic radius decreases from left to right.