The Periodic Table - Review Flashcard

Front

In the modern Periodic Table, how are the elements arranged?

Back

The elements are arranged according to atomic number.

Front

Which element has an atomic radius that is greater than its ionic radius?

Back

Potassium (K) has an atomic radius greater than its ionic radius.

Front

What is the most active metal in Period 3 of the Periodic Table?

Back

Sodium (Na) is the most active metal in Period 3.

Front

Which element is so chemically active that it occurs naturally only in compounds?

Back

Potassium (K) is so active that it occurs naturally only in compounds.

Front

What charge does potassium form when it becomes an ion?

Back

Potassium forms a 1+ ion by losing one electron.

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom.

Front

What is the significance of the atomic radius in the Periodic Table?

Back

The atomic radius is a measure of the size of an atom, which can influence its reactivity and bonding.

Front

How does the ionic radius compare to the atomic radius for metals?

Back

For metals, the ionic radius is usually smaller than the atomic radius because they lose electrons.

Front

What trend is observed in atomic radius as you move down a group in the Periodic Table?

Back

The atomic radius increases as you move down a group due to the addition of electron shells.

Front

What is the trend in electronegativity across a period?

Back

Electronegativity increases across a period from left to right.