atom

/atom/

Cases

SingularPluralWhen to use it
nominativeatomthe atomatomlathe atomsthe plain dictionary form — the doer of the sentence
genitiveatomnuthe atom'satomlanıthe atoms'the owner — whose it is
accusativeatomnuthe atom (as the object)atomlanıthe atoms (as the object)a specific, known object — whom or what
dativeatomğato the atomatomlağato the atomsdirection or recipient — to where, to whom
locativeatomdaat / in the atomatomladaat / in the atomswhere it is; also having — mende bar, "I have it"
ablativeatomdanfrom the atomatomladanfrom the atomswhere it comes from; also "than" when comparing
When to use each case
nominative
the plain dictionary form — the doer of the sentence
genitive
the owner — whose it is
accusative
a specific, known object — whom or what
dative
direction or recipient — to where, to whom
locative
where it is; also having — mende bar, "I have it"
ablative
where it comes from; also "than" when comparing

The endings are the same ones the pronouns wear — that page explains when each case is used.

With an owner

One ownedSeveral owned
myatomummy atomatomlarımmy atoms
youratomungyour atomatomlarıngyour atoms
his / heratomuhis / her atomatomlarıhis / her atoms
ouratomubuzour atomatomlarıbızour atoms
you all'satomuğuzyou all's atomatomlarığızyou all's atoms
theiratomlarıtheir atomatomlarıtheir atoms

The overlap in the last rows is real, not a mistake: atomları can mean "his / her atoms", "their atom", or "their atoms" — context decides.