1) no, not Part of Speech: negative adverb A Related Word by BDB/Strong’s Number: corresponding to H408 Same Word by TWOT Number: 2574
Brown-Driver-Briggs
אַלadverb of prohibition, do not . . ., let not . . ., followed by imperfect ( = Biblical Hebrew I. אַל; Zenjirli אל (Had22. 23. 29) Cooke160f.; compare Pahlavi (NöGGA, 1884, 1016); not ᵑ7 Syriac); — Daniel 2:24אַלֹתְּֿהוֺבֵד, Daniel 4:16; Daniel 5:10.
Englishman's Concordance (References)
Strong's Hebrew: 409. אַל (al) — 4 Occurrences
Daniel 2:24 HEB:לְחַכִּימֵ֤י בָבֶל֙ אַל־ תְּהוֹבֵ֔ד הַעֵ֙לְנִי֙ KJV: unto him; Destroy not the wise INT: men of Babylon not destroy Take
Daniel 4:19 HEB:חֶלְמָ֤א וּפִשְׁרֵא֙ אַֽל־ יְבַהֲלָ֔ךְ עָנֵ֤ה KJV: Belteshazzar, let not the dream, INT: the dream interpretation not alarm replied
Daniel 5:10 HEB:לְעָלְמִ֣ין חֱיִ֔י אַֽל־ יְבַהֲלוּךְ֙ רַעְיוֹנָ֔ךְ KJV: for ever: let not thy thoughts INT: forever live not alarm your thoughts
Daniel 5:10 HEB:רַעְיוֹנָ֔ךְ וְזִיוָ֖יךְ אַל־ יִשְׁתַּנּֽוֹ׃ INT: your thoughts your face not be pale