Equal in atomic number
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AnswerCrossword Clue
ISOMEREqual in atomic number
isotoneone of two or more atoms having an equal number of neutrons but different atomic numbers
isotonesone of two or more atoms having an equal number of neutrons but different atomic numbers
protonsA stable subatomic particle occurring in all atomic nuclei, with a positive electric charge equal in magnitude to that of an electron, but of opposite sign
ISOTOPEElement resembling another in atomic number but not weight.
thindowna lessening of the number of atomic particles in the air
thindownsTHINDOWN, a lessening of the number of atomic particles in the air
nuclideatomic species in which the atoms all have the same atomic number and mass number
chromiumThe chemical element of atomic number 24, a hard white metal used in stainless steel and other alloys
molybdenumThe chemical element of atomic number 42, a brittle silver-gray metal of the transition series, used in some alloy steels
transuranicdenoting any chemical element having atomic number beyond uranium (92), not occuring in nature but artificially produced by bombardment of atoms
technetiumThe chemical element of atomic number 43, a radioactive metal. Technetium was the first element to be created artificially, in 1937, by bombarding molybdenum with deuterons
protactiniumThe chemical element of atomic number 91, a radioactive metal of the actinide series, occurring in small amounts as a product of the natural decay of uranium
thalliumThe chemical element of atomic number 81, a soft silvery-white metal that occurs naturally in small amounts in pyrite and other ores. Its compounds are very poisonous
germaniumThe chemical element of atomic number 32, a shiny gray semimetal. Germanium was important in the making of transistors and other semiconductor devices, but has been largely replaced by silicon
mendeleviumThe chemical element of atomic number 101, a radioactive metal of the actinide series. It does not occur naturally and was first made in 1955 by bombarding einsteinium with helium ions
einsteiniumThe chemical element of atomic number 99, a radioactive metal of the actinide series. Einsteinium does not occur naturally and was discovered in 1953 in debris from the first hydrogen bomb explosion
promethiumThe chemical element of atomic number 61, a radioactive metal of the lanthanide series. It was first produced artificially in a nuclear reactor and occurs in nature in traces as a product of uranium fission
neptuniumThe chemical element of atomic number 93, a radioactive metal of the actinide series. Neptunium was discovered as a product of the bombardment of uranium with neutrons, and occurs only in trace amounts in nature
neodymiumThe chemical element of atomic number 60, a silvery-white metal of the lanthanide series. Neodymium is a component of misch metal and some other alloys, and its compounds are used in coloring glass and ceramics
telluriumThe chemical element of atomic number 52, a brittle, shiny, silvery-white semimetal resembling selenium and occurring mainly in small amounts in metallic sulfide ores. It is a semiconductor and is used in some electrical devices and in specialized alloys
superheavyRelating to or denoting an element with an atomic mass or atomic number greater than those of the naturally occurring elements, esp. one belonging to a group above atomic number 110 having proton/neutron ratios that in theory confer relatively long half-lives
isospinsA vector quantity or quantum number assigned to subatomic particles and atomic nuclei and having values such that similar particles differing only in charge-related properties (independent of the strong interaction between particles) can be treated as different states of a single particle
phosphorusThe chemical element of atomic number 15, a poisonous, combustible nonmetal that exists in two common allotropic forms, white phosphorus, a yellowish waxy solid that ignites spontaneously in air and glows in the dark, and red phosphorus, a less reactive form used in making matches
plutoniumThe chemical element of atomic number 94, a dense silvery radioactive metal of the actinide series, used as a fuel in nuclear reactors and as an explosive in nuclear fission weapons. Plutonium only occurs in trace amounts in nature but is manufactured in nuclear reactors from uranium-238
fifteenthnumber fifteen in sequence / one of fifteen equal parts
equalitiesThe condition of being equal in number or amount
eightiethnumber eighty in sequence / one of eighty equal parts
twentiethnumber twenty in sequence / one of twenty equal parts
equalityThe condition of being equal in number or amount
umbelinflorescence in which a number of flower stalks or pedicels, nearly equal in length, spread from a common center
electrovalencethe valency of a substance in forming ions, equal to the number of electrons gained or lost also ELECTROVALENCY
umbelsinflorescence in which a number of flower stalks or pedicels, nearly equal in length, spread from a common center
electrovalencythe valency of a substance in forming ions, equal to the number of electrons gained or lost also ELECTROVALENCE
electrovalencesELECTROVALENCE, the valency of a substance in forming ions, equal to the number of electrons gained or lost also ELECTROVALENCY
prismoidsA solid geometric figure like a prism, in which the end faces have the same number of sides but are not equal
isorhythmicin ancient prosody, equal in the number of time-units for thesis and arsis, as dactyl, spondee, anapaest; (in medieval motets) having a strict scheme of repeated rhythm independent of melodic repetition
mugginsgame of dominoes, in which any player who can make the sum of two ends of the line equal five or a multiple of five adds the number so made to his or her score
basenumber equal to the number of units in a given digit's place that for a given system of writing numbers is required to give the numeral 1 in the next higher place the decimal system uses a base of 10
phonunit for measuring the apparent loudness of a sound, equal in number for a given sound to the intensity in decibels of a sound having a frequency of 1000 cycles per second when, in the judgment of a group of listeners, the two sounds are of equal loudness