Sem1 Remedial Test

Front

What is an ion?

Back

An ion is an atom or molecule that has gained or lost one or more electrons, resulting in a net electric charge.

Front

What charge does a nitrogen ion typically have?

Back

A nitrogen ion typically has a -3 charge when it gains three electrons.

Front

What is the symbol for a bromine ion that has gained one electron?

Back

The symbol for a bromine ion that has gained one electron is Br^-1.

Front

How many valence electrons does Barium (Ba) have?

Back

Barium (Ba) has 2 valence electrons.

Front

What element is located in group 2, period 6 of the periodic table?

Back

The element located in group 2, period 6 is Barium (Ba).

Front

What is ionization energy?

Back

Ionization energy is the energy required to remove an electron from an atom or ion.

Front

Which element has a lower ionization energy than Scandium (Sc)?

Back

Calcium (Ca) has a lower ionization energy than Scandium (Sc).

Front

What is the general trend of ionization energy across a period?

Back

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

Front

What is the general trend of ionization energy down a group?

Back

Ionization energy generally decreases down a group in the periodic table.

Front

What is a valence electron?

Back

A valence electron is an electron that is found in the outermost shell of an atom and can participate in chemical bonding.