Ir
Lanthanum See Related Link
The atomic mass of an element is the sum of the number of protons and neutrons in the nucleus of an atom. In this case, the element has 7 protons and 8 neutrons, so the atomic mass would be 7 + 8 = 15 atomic mass units.
There should be seven in the second shell and two in the first. The element in question is fluorine, which has the atomic number 9, the same as the number of its protons and electrons.
Atomic number is a unique number for each element. No two elements have the same atomic number. Atomic number is also the number of protons in the nuclei of the atoms of any given atom. Atomic mass, however, is the number of protons, neutrons and electrons. The number of neutrons can vary with different isotopes of the same element, this means that atomic mass can vary with different isotopes. So atomic number does not vary, but atomic mass does, so it is more logical to use atomic number to organize the elements. In addition, when the elements are arranged according to atomic number into seven rows and 18 columns, it becomes evident that there are certain trends that occur across the periods, and that elements in the same group have similar properties.
59 = # of protons and # of electons 59 protons make up 59 of the mass number (electons have an insignificant mass), so the rest of the mass must be from neutrons: 96 - 59 = 37 neutrons
Silver is a metal element. Atomic number of it is 47.
For any periodic element, its atomic number correlates directly with its number of protons. Thus, an element with an atomic number of six has six protons, with an atomic number of seven, seven protons, and so on.
Nitrogen
The answer is: Nitrogen.
Lithium is an element with an atomic number of 3 and an atomic mass of 7.
Silver (Ag) has an atomic number of 47 and is used in photography.
Silver, with symbol Ag.
Cobalt, is in the metal family. The atomic number for the element of cobalt, (word steaming from the German meaning for evil spirit, and goblin) is twenty seven.
Could you please re-ask your question in a better manner, because that question does not make sense. Are you trying to ask the atomic mass of the element with the atomic number of 7? or are you just stating that there is an element with the atomic number of 7? because that is not a very good question.
seventy seven quintillion, seven hundred seventy seven quadrillion, seven hundred seventy seven trillion, seven hundred seventy seven billion, sevenhundred seventy seven million, seven hundred seventy seven thousand, seven hundred seventy seven. :-)
Lanthanum See Related Link
The atomic mass of an element is the sum of the number of protons and neutrons in the nucleus of an atom. In this case, the element has 7 protons and 8 neutrons, so the atomic mass would be 7 + 8 = 15 atomic mass units.