Crossword Puzzle Sentence element, often

Clue: Sentence element, often

Sentence element (NOUN with 4 letters)
Element used in CRTs and LEDs (YTTRIUM with 7 letters)
Of an air element (NITRIC with 6 letters)
Elementary school gp. (PTA with 3 letters)
Court sentence? (PLEA with 4 letters)
Element used in nuclear technology (ERBIUM with 6 letters)
In one's element (ATHOME with 6 letters)
Causative elements (FACTORS with 7 letters)
Sentence fragments often beginning with "wh-" words (RELATIVECLAUSES with 15 letters)
Two-element electron tube (DIODE with 5 letters)