Grade 9 True or false poll

In an atom, electrons and the nucleus interact to make the most stable arrangement.

• True

• False

Filling is a property of electrons that may be thought of as clockwise or counterclockwise orientation.

• True

• False

The electron configuration of Neon (Ne) is 1s2 2s2 2p6

• True

• False

The fixed energies an electron can have are called energy levels.

• True

• False

The excited state means that the electron is in the lowest possible energy level.

• True

• False

The attractive forces between the negatively charged electrons help explain why each type of orbital has a different shape and relative energy.

• True

• False

A mass number represents the number of electrons in each subshell.

• True

• False

Energy plays an important role in determining how electrons are arranged, or configured, in an atom. Electrons fill the highest energy subshells first.

• True

• False

Knowing that Chromium has an exceptional electron configuration to be stable. Its electron configuration is 1s2 2s2 2p6 3s2 3p6 4s1 3d5

• True

• False

The electron dot structures are simple diagrams that show the number of valence electrons.

• True

• False