1. RULES FOR STRESS IN LATIN
A two-syllable word is stressed on the first syllable
A word with three-or-more syllables is stressed on the penultimate (second-from last) syllable if that syllable is `long’ or `heavy’, i.e :
Contains a long vowel
AND/OR ends in a consonant, which normally happens when the vowel is followed by two consonants (a single consonant is always pronounced with the following syllable).
If the penultimate syllable contains a short vowel followed either by no consonant or a single consonant, the stress is on the antepenultimate (third-from-last) syllable

2. EXCEPTIONS
Combinations of the consonants p, b, c, g, t, d with`r’ or `l’ (e.g. `pr’, `cl’) were regarded as forming a single sound and so did not make a syllable heavy.
Similarly, an h was ignored in counting the number of consonants
`x’ is really a double consonant (= `k’ + `s’) so DOES make a syllable heavy
When the particles –ne, -que, -ve are added to a word, the combination of original word and particle is treated as if it were a single word for stress purposes:
Dominúsne adest? Is the master present?
Urbs arcem ūnam témplaque tria habet.
The city has one citadel and three temples