The second.
Lightning is stressed on the first syllable.
Evaporate is stressed on the second syllable. A simple way of testing which syllable is stressed is by saying the word aloud. Look for the syllable that you naturally emphasise more in your speech.
HELIUM: hel-i-um
The third.
In the word "silver," the unstressed syllable is "ver." The emphasis is on the first syllable, "sil-" while the second syllable "ver" is unstressed.
The unstressed syllable is "im".
The second syllable is unstressed.
its the "i" that's unstressed
The unstressed syllable in the word "continue" is the second syllable, "tin." It is pronounced less forcefully compared to the stressed syllable, which is the first syllable, "con."
The syllable structure is pan-ic. The unstressed syllable is the second syllable, or "ic"
The unstressed syllable in "despair" is the second syllable, "pair." The emphasis is on the first syllable, "de."
The unstressed syllable in "achieve" is the first syllable, "a-". It is pronounced quickly and with less emphasis compared to the stressed syllable "-chieve".
The second syllable of the word language is unstressed.
An unstressed syllable is like the first syllable in around. A-round has the syllable as stronger and therefore stressed but the first syllable (which is "a") is unstressed.
The unstressed syllable in "germination" is "na." It is heard less prominently compared to the stressed syllables "ger" and "mi."
In English, the second syllable is unstressed. (However, in the phrase borrowed from French, "bon voyage", the first syllable of "voyage" is unstressed.)