Declension table of ṇatva

Neuter	Singular	Dual	Plural
Nominative	ṇatvam	ṇatve	ṇatvāni
Vocative	ṇatva	ṇatve	ṇatvāni
Accusative	ṇatvam	ṇatve	ṇatvāni
Instrumental	ṇatvena	ṇatvābhyām	ṇatvaiḥ
Dative	ṇatvāya	ṇatvābhyām	ṇatvebhyaḥ
Ablative	ṇatvāt	ṇatvābhyām	ṇatvebhyaḥ
Genitive	ṇatvasya	ṇatvayoḥ	ṇatvānām
Locative	ṇatve	ṇatvayoḥ	ṇatveṣu

Compound ṇatva -

Adverb -ṇatvam -ṇatvāt