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q describe about nuclei and radioactive decaydalton consideration that atoms were unchangeable but scientists in the late nineteenth century began to
q how to calculate atomic mass of an elementcopper survive as a mixture of two isotopes the lighter isotope cu-63 amid 29 protons and 34 neutrons
q atomic mass of an elementthe number at the bottom of every square in the periodic table is the atomic mass of that element in amu a scan of the
q define atomic mass unitsatomic mass scientists have set up a standard for the measurement of atomic mass by assigning the carbon-12 atom a mass of
q determine the number of neutronsisotopes of an element can as well be specified by writing the mass number of the isotope following a hyphen after
q what do you mean by isotopesisotopes and mass number although all atoms of an element have the same number of protons most elements have atoms with
q how to calculate atomic numberatoms have no net electrical charge for the reason that they contain equal numbers of electrons and protons therefore
q describe about atomic numberit is significant to be able to obtain useful information from the periodic table beginning with the simplest element
what are the main events of the final mitotic periodthe final mitotic phase is telophase in telophase the following events happens decondensation of
during mitotic anaphase is there separation of homologous chromosomes or separation of identical chromatidsin the anaphase of mitosis the identical
q illustrate about nuclear particlein 1932 rutherford with chadwick demonstrated the existence of the neutron a nuclear particle having no charge but
what are the main events of the third mitotic period the third mitotic period is anaphase in anaphase the following events happen duplication and
normal 0 false false false en-in x-none x-none microsoftinternetexplorer4
what are the main events of the first mitotic periodthe first mitotic period is prophase during prophase the following events happen migration of
does mitosis properly occur before or after the interphase is it a mere point of view issue mitosis must be considered a succeeding phase after
q what do you mean by nucleus of the atomthe nucleus of an atom for the reason that atoms have no net electrical charge scientists reasoned that if
what are the events that mark the beginning and the end of the third interphase period what happens in the cell in this period the third interphase
q describe subatomic particles and the nuclear atomone of the most significant results of daltons theory was that it generally persuaded scientists
what are the events that mark the beginning and the end of the second interphase period what happens in the cell in this periodthe second interphase
what are the events that mark the beginning and the end of the first interphase period what happens within the cell in this periodthe first
q explain daltonrsquos atomic theorythe atomic theory in 1808 john dalton projected a theory to explain the laws of conservation of matter definite
q early theories of matterin ancient greece philosophers discussed the nature of matter the philosopher democritus held that matter was composed of
q what is law of definite proportionsa given compound is forever composed of the same elements in the same proportion by mass this fact is recognized
q what is compounda compound is a substance which consists of two or more elements chemically combined the elements in a compound arent simply
q describe about groups or families in periodic tableevery element may be represented by a one or two letter symbol in the middle of nineteenth