| Lead statistic | 14 |
| Unique identifier using the five vowels | 39 |
| Physicist's theme song? | 27 |
| Bohr or Fermi | 13 |
| Energy source since 1942 | 24 |
| Early nuclear reactor | 21 |
| Chain reaction facilitator | 26 |
| Itty-bitty ballet bend? | 23 |
| What the Enola Gay's bomb carried | 37 |
| Science for a physicist | 23 |
| Nuclear physics | 15 |
| What the Bohr model attempted to explain | 40 |
| It includes a nucleus | 21 |
| Fission boat? | 13 |
| 1950s Cold War development | 26 |
| 1950's cold war development | 31 |
| Hot-running navy vessel? | 24 |
| Every chemical element has one | 30 |
| Division in physics | 19 |
| For oxygen, 16; for carbon, 12, etc. | 36 |
| Disintegrate: Brit. | 19 |
| Sprayed: Var. | 13 |
| Theory that answers the question "What's the matter?"? | 68 |
| Philosophical theory first advanced by Leucippus and Democritus | 63 |
| Particle theory | 15 |
| Democritus, for one | 19 |
| Democritus was one | 18 |
| Democritus or Leucippus, philosophically | 40 |
| Democritus or Dalton | 20 |
| Democritus follower | 19 |
| Believer in minute particles doctrine | 37 |
| Less than molecular | 19 |
| Leucippus and Democritus, philosophically | 41 |
| Epicurus and Democritus, philosophically | 40 |
| Democritus and Epicurus | 23 |
| Mist maker | 10 |
| Item on a vanity, perhaps | 25 |
| Perfumery purchase | 18 |
| Perfume dispenser | 17 |
| Item on milady's dresser | 28 |
| Cosmetics counter gadget | 24 |
| Scent spreaders | 15 |
| Smashes to smithereens | 22 |
| Reduces to mist | 15 |
| Blows to smithereens | 20 |
| One of Lex Luthor's alter egos | 34 |
| Lex Luthor alter ego, once | 26 |
| Fermi's subject | 19 |
| ... and about 7 octillion ... | 29 |
| Tiny thing | 10 |
| Tiny particle, old style | 24 |
| Tiny being | 10 |
| Pygmy | 5 |
| Venial | 6 |
| Expiable | 8 |
| Quality of Bartók's music | 32 |
| Feature of the 1925 opera "Wozzeck" | 45 |
| Characteristic of Schönberg's music | 46 |
| In an unharmonious way | 22 |
| Without any key, in music | 25 |
| How some music is composed | 26 |
| How keyless music is written | 28 |
| How certain music is structured | 31 |
| Do a quick Erev Yom Kippur, show your face for Kol Nidre, no muss no fuss? | 74 |
| Scarlet? | 8 |
| Reconciliations | 15 |
| Some religious experiences | 26 |
| When to return from lunch | 25 |
| Synagogue, during Yom Kippur? | 29 |
| Present for your communication with an English saint? | 53 |
| In top form | 11 |
| In closest proximity | 20 |
| In a person's immediate vicinity | 36 |
| In a disciple's position | 28 |
| Not separate from | 17 |
| Enjoying the outdoors, say | 26 |
| Lack of vital energy | 20 |
| Unaccented | 10 |
| Not accented | 12 |
| Unaccented, as syllables | 24 |
| Unstressed | 10 |
| Unaccented syllable | 19 |
| Stressless | 10 |
| Not accented, as syllables | 26 |
| Lack of accent | 14 |
| Unaccented words | 16 |
| Muscular weaknesses | 19 |
| Muscle weakness | 15 |
| Lack of muscle tone | 19 |
| Muscular weakness | 17 |
| Lack of muscle firmness | 23 |
| Physiological weakness | 22 |
| Lack of texture, as a muscle | 28 |
| Lack of muscle power | 20 |
| Words before and after "for" in a quid pro quo quote | 62 |
| Middle of the good advice | 25 |
| Age-old retaliation | 19 |
| Part of Hammurabi's code | 28 |
| Part of a biblical retribution | 30 |
| Half of an avenger's motto | 30 |