1 The cause of this most common type of cardiomyopathy often is unknown. 2  It may be caused by reduced blood flow to the heart (ischemic heart disease), infections, toxins and certain drugs. 3  It also may be inherited from a parent. 4  It usually enlarges (dilates) the left ventricle.ommon causes of abnormal heart rhythms (arrhythmias) or conditions that can lead to arrhythmias include: 1  Heart defects you're born with (congenital heart defects). 2  Coronary artery disease. 3  High blood pressure. 4  Diabetes. 5  Smoking.
The second ionization energy is always larger than the first ionization energy, because it requires even more energy to remove an electron from a cation than it is from a neutral atom. The first ionization energy varies in a predictable way across the periodic table. The ionization energy decreases from top to bottom in groups, and increases from left to right across a period. Thus, helium has the largest first ionization energy, while francium has one of the lowest.
Because the electron in a 2 s orbital is already at a higher energy than the electrons in a 1 s orbital, it takes less energy to remove this electron from the atom. The first ionization energies for the main group elements are given in the two figures below. Two trends are apparent from these data.he answer can be obtained from data for the second, third, and higher ionization energies of the element. The first ionization energy of sodium, for example, is the energy it takes to remove one electron from a neutral atom.