Each one has a different number of protons, electrons and neutrons. The total number of these subatomic particles held by the respective elements are responsible for their unique properties (including radioactivity). The number of protons in the nucleus is called the atomic number. The atomic ...
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...
For a neutral atom, the number of proton and electron is the same and is equal to the atomic number. The letter Z denotes atomic number.Answer and Explanation: The given atomic number is 22. This means that there are 22 electrons in the ground state. The order ...
In order for an object to be neutral, it has to have the same number of protons and electrons, therefore they cancel each other out. Why is it that some objects can be charged by giving up electrons or taking protons, but a wall can not? It can only be po ...
Atoms are the basic unit of matter. Each atom has a dense nucleus composed of neutrons and protons. It also has a less dense outer electron cloud. Neutral atoms contain the same number of protons and electrons, which are positively and negatively charged, respectively....
The mass number of an atom is the total number of protons and neutrons contained within the nucleus of the atom. The number of protons determines the element and will always equal the atomic number of that element. The number of neutrons can change and will determine which isotope of that...
The number of protons determines the element, but the number of neutrons in the atom of any one element can vary. Each variation is an isotope. A radioactive isotope is one that breaks apart and gives off some form of radiation. More than a dozen radioactive isotopes of cerium have ...
It is important to note that the number of neutrons that exist in the nucleus of an atom cannot be determined by its atomic number. Different isotopes of an element may have the same number of protons and electrons (since they have the same atomic number), but they may have varying numbe...
absorbed by the elements increases due to the behavior of the electrons. Iodine is slightly soluble in water and more soluble in nonpolar solvents. Its melting point and boiling point are the highest of the halogens. The bond between atoms in thediatomicmolecule is the weakest in the element ...
reminder: compounds are electrically neutral therefore sum of all charges in compound MUST be 0 (+) and (-) charges must = each other Equal but Opposite Charges Na +1 and Cl -1 : NaCl +1 + (-1) = 0 Mg +2 and O -2 : MgO +2 + (-2) = 0 Al +3 and P -3 : AlP+3...