There are two syllables: un-known.
Boundary is stressed on the first syllable.
Yes, the second syllable in "boundary" is stressed. The stress falls on the "dar" syllable.
The stressed syllable is the the first syllable of the word. BOUN-da-ry
The first.
The stressed syllable in the word "boundary" is "bound."
The first.
Yes.
"Stalk" is one syllable.
There is 1 syllable.
The word "it" is all one syllable.
The word is all one syllable.
you write a unaccented syllable followed with on accented syllable so it is every other