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.
Ionization energy decreases down a group in the periodic table due to the fact that the outermost electrons are further away from the nucleus. The increase in distance between the positive nucleus and the negative electrons creates a weaker attraction between the two.As a result, less energy is needed to remove an electron from elements located lower on the periodic table. Ionization energy increases as you move across a row of the periodic table.This is due to a smaller atomic radius and a greater attraction between the nucleus and the electrons. This increase in attraction makes it so that a greater amount of energy is needed to remove an electron and ionize that atom.he increase in distance between the positive nucleus and the negative electrons creates a weaker attraction between the two. As a result, less energy is needed to remove an electron from elements located lower on the periodic table. Ionization energy increases as you move across a row of the periodic table.