Atomic Number: The atomic number of an element represents the number of electrons or the number of protons in the element while the atomic mass represents the sum of neutrons and protons that exist in the element. Answer and Explanation:
Atomic number Z represents the number of protons per atom. Mass number Z + N is equal to the number of protons Z plus the number of neutrons N present in the nuclei. Mass numbers of the most abundant isotopes are given in order of decreasing abundance. For example, Cadmium Cd-48 mass ...
Using the Average of a Property: The average of a property means the combined mass of the samples to be weighed divided by the number of samples. The average of a property is a value used to represent the whole rather than ...
the order of an element in Mendeleyev's table of the elements; equal to the number of protons in the nucleus or electrons in the neutral state of an atom of an element 更多 英文 词典里"atomic number"的近义词 英文 叙词表中“atomic number"的另一个词是number。 number 更多 atomic numbe...
The atomic number of an element is equal to the total number of protons in the nucleus of the atoms of that element. The atomic number can provide insight into the electronic configuration of the element. For example, carbon has an electron configuration of [He] 2s22p2, since its atomic ...
An atom consists of a nucleus and an electron cloud around it. Nucleus consists of protons and neutrons. A neutral atom has equal number of protons and electrons. The number of protons plus the number of neutrons is the mass number of the atom....
The atomic number of gold is 79 and the mass number of one of its isotopes is 197. The number of neutrons is (a) 79. (b) 197. (c) 118. (d) 158. Uranium 235 has 92 protons in its atoms. Calculate the number of neutrons in this atom. ...
Radioactive decay is a process by which a nucleus of an atom gives off a particle from their nucleus which changes the number of protons, neutrons, or both in the nucleus of that atom. Radioactive decay changes the identity of one atom or isotope into another atom or isotope with a new...
Find the number of protons, number of neutrons, mass number, atomic number, charge, and atomic mass for the following nuclei: 3He, 4He, 18O. The atomic mass number of a nucleus is 128. What is its radius in femtometre? Express your answer using three signifi...