A mental ion may have the same electronic configuration as a noble but it is not a noble gas atom because

noble gas atoms have all of their valence electrons filled

Explanation:

the main difference between the metal ion and noble gas is that noble gases do not create or have a charge, due to the fact that all their valence electrons are full and they don't give or take any charge.

practical process described pest part of scientific investigation.

because practical knowledge is powerful then therotical knowledge.

a:

by the combination of an unlimited number of elements