Protons are positively charged (+) with a mass of 1 amu. Example: Which has the greatest nuclear charge? Cl-35 Ar-40 k-39 Ca-40have a definite shape and volumeRutherford's
If an atom has an atomic number of 8, how many protons will it have? How many protons are in an isotope of sodium with a mass number of 25? An atom has a mass number of 25 and 13 neutrons. what is the atomic number of this atom? An atom has a mass number of 24 and 13 neut...
Chapter 2/ Lesson 1 266K Learn the definition of an atom, what atoms contain, the nucleus in the middle of an atom, what atoms look like, and examples of atoms. Related to this Question Explore our homework questions and answers library ...
Atomic structure Grams are not used to measure mass of atoms because atoms are too small –Amu is used instead –Amu = atomic mass unit Amu – 1/12 th the mass of a carbon-12 atom, which contains 6 protons and 6 neutrons Isotopes Isotopes are atoms that have the same number of proton...
Calculate the atomic mass of element X. 元素x有三同位素: X-221, X-220和X-218,与大量220.9, 220.0和218.1 amu。 这三同位素相对丰盈分别为74.22%, 12.78%和13.00%。 计算原子质量元素X。 [translate] aPlease be noted I will annual leave on 1st, Nov 请着名我意志年假在第1, 11月 [translate] ...
The atomic mass is equal to: A. the number of neutrons. B. the number of protons plus the number of electrons. C. the number of protons plus the number of neutrons. D. the number of electrons. E. the number of protons. If atom X has an atomic number of 74, it would have which...
Lead is very dense which is why it is often used to block radiation. Its density is 11.34 g/cm3. This means that if you had a cube that was 1 cm x 1 cm x 1cm it would have a mass of 11.34 g. By comparison, the same sized cube of gold would weigh 19.30 g. So a cube of ...
Neutron-rich isotopes of Ba, Pd, and Sr all have sharply peaked spectra with mean momenta >120 ( MeV amu ) 1 / 2 , consistent with their production by binary fission. Neutron-deficient isotopes of these elements are characterized by lower mean momenta [<106 ( MeV amu ) 1 / 2 ] and...
Effects of heavy ions and energetic protons on normal human fibroblasts At the low particle fluences of radiation to which astronauts are exposed in space, "non-targeted" effects such as the bystander response may have increase... H Yang,V Anzenberg,KD Held - 《Radiatsionnaia Biologiia Radio...
What is the average atomic mass of Element X if 51.83% of Element X occurring in nature has a mass of 106.905 amu and 48.17% of the atoms have a mass of 108.905 amu? How is average atomic mass calculated? How many neutrons, protons, and elect...