Properties of elements flashcard

Front

What makes elements in group 17 reactive?

Back

They all need one electron to fill their outer shell.

Front

What is true about the electron configuration of elements in group 17?

Back

They need one more electron to fill their outer shell.

Front

Which elements are most likely to react with each other?

Back

Lithium and oxygen.

Front

What is true about the electron configuration of elements in the 1st column of the periodic table?

Back

There is one valence electron.

Front

What do the dots in dot diagrams represent?

Back

The number of valence electrons on each atom in the element.

Front

What is a valence electron?

Back

A valence electron is an electron in the outermost shell of an atom that can participate in forming chemical bonds.

Front

What is the significance of the periodic table's group number?

Back

The group number indicates the number of valence electrons in the elements of that group.

Front

How do elements in group 1 react with water?

Back

They react vigorously, often producing hydrogen gas and a hydroxide.

Front

What is the general trend in reactivity for group 1 elements?

Back

Reactivity increases as you move down the group.

Front

What is the electron configuration of a noble gas?

Back

Noble gases have full outer electron shells, making them stable and unreactive.