The Atomic Weight of Elements: The atomic mass of an element is equal to the sum of the number of protons and neutrons present in that element. The unit of atomic mass is amu. One atomic mass unit (amu) is equal to 1/1...
Each element in theperiodic tableconsists of atoms, and each atom has a unique atomic mass and unique atomic number. The atomic number refers to the number of protons in the atom's nucleus, while atomic mass reflects the sum of the number of protons and neutrons. It is expressed in AMU ...
3 CHEMISTRY-RELATIVE ATOMIC MASS the mass of a hydrogen atom 1/1H is equal to 1/12 of the mass of a carbon-12 atom, so its relative isotopic mass is 1.A magnesium atom 24/12Mg is twice as heavy as a carbon-12 atom,so its relative isotopic mass is 24 再给另一个例子 不要用英文...
is the heaviest Pf, El What did you learn ? Clue Alien Element Carbon is important in the chemistry of life Fx is important in the chemistry of life Fx The number of protons is equal to the atomic number on the periodic table Do has 4 ...
1 The relative atomic mass of an element is always D A the mass of an atom of the element relative to z the mass of a carbon-12 atom. B the mass of an atom of the element relative to the mass of a hydrogen atom.□ C the weighted mean mass of an atom of the element relative ...
atomic weight,relative atomic mass mass- the property of a body that causes it to have weight in a gravitational field combining weight,eq,equivalent weight,equivalent- the atomic weight of an element that has the same combining capacity as a given weight of another element; the standard is 8...
equal to the number of protons within the nucleus, since each proton carries unit positive charge. In electrically neutral atoms, it also represents the number of electrons, which carry unit negative charge. • Mass number (A): The mass number is equal to the total ...
1. The Elements and The Periodic Table(元素和周期表) The number of protons in the nucleus of an atom is referred to as the atomic number, or proton number, Z. The numbers of electrons in an electrically neutral atom is also equal to the atomic number, Z. The total mass of an atom ...
How could the scientists have found the atomic number of the first element? What is the mass of a neutron? The quark composition of the proton is uud, while that of the neutron is udd. Show that the charge, baryon number, and strangeness of ...
The energy equivalent of one atomic mass unit is View Solution Show that energy equivalent of one atomic mass unit is nearly 933MeV. Take 1amu=1.66×10−27kg View Solution Knowledge Check Question 1 - Select One On atomic mass unit is equal to Amass of one atom of hydrogen Bmass of...