FNMA will allow the origination of Temporary QM Rebuttable Presumption loans, however these loans. are limited to 45% debt-to-income ratio regardless of the ratio provided on the DU approval. If youâll. remember from our last video, a rebuttable presumption loan is a loan in which the APR exceeds the.
An isotope is a form of a chemical element whose atomic nucleus contains a specific number of neutron s, in addition to the number of proton s that uniquely defines the element.The nuclei of most atom s contain neutrons as well as protons.n atom of carbon-14 contains 6 protons and 8 neutrons and is denoted 14 C. Over time, 14 C decays into 12 C. Sometimes the isotope of an element is denoted by writing the nucleon number after the chemical symbol, and not as a superscript.
a chemical element whose isotopes are all radioactive. The class of radioactive elements ineludes. technetium (atomic number 43), promethium (61), polonium (84), and all the elements that follow it in the Mendeleev periodic system (see Figure 1).By 1975, 25 radioactive elements were known.adioactive Element. a chemical element whose isotopes are all radioactive. The class of radioactive elements ineludes. technetium (atomic number 43), promethium (61), polonium (84), and all the elements that follow it in the Mendeleev periodic system (see Figure 1). By 1975, 25 radioactive elements were known.