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.
ISOTOPES Nuclei of the same element having same atomic number but different mass number are known as isotopes. OR Nuclei of same element having same number of proton but different number of neutron are knows as isotopes. Example 17Cl35, 17Cl37 6C12, 6C13 ISOTOPES OF HYDROGEN There are three isotopes of hydrogen.