Charged particle taken from this puzzle's four longest entries

Question:

Answer:

ION

Length:

Similar Crossword Questions:

Insincere talk, and a hint to the starts of this puzzle's four other longest entries
Promising words (and what's hidden in this puzzle's four longest entries)
"Awesome!" addition to this puzzle's three longest entries
Job, figuratively, and what's inside each of this puzzle's four longest entries
Word that can come before the last word of this puzzle's longest entries
What the four longest entries in this puzzle (except this one) are examples of
A synonym for it can be found inside this puzzle's four longest entries
New Haven collegian hidden in this puzzle's longest entries
What each of this puzzle's longest entries has two of
What this puzzle's three longest entries are all about?
Soft stuff found in this puzzle's four longest Across entries
Sales person's forte, and a synonym for the ends of this puzzle's three longest entries
Sophomoric grade found in this puzzle's three longest entries
2006 Disney film, and the ends of the eight longest entries in this puzzle
Little ones who, they say, are made up of the ends of this puzzle's four longest entries
Link buried in this puzzle's three longest entries
"Lady of letters" featured in this puzzle's four longest entries
Linked, as this puzzle's thematic entries
What this puzzle's theme entries probably do?
Need bailing, or what five entries in this puzzle can do to make two overlapping words or phrases
The last word of this puzzle's five longest answers is a type of one
Summer coolers, briefly, and a hint to this puzzle's six longest answers
Charged subatomic particle
Where to find the first words of the four longest puzzle answers
There's one at the beginning of each of this puzzle's four theme entries