经济生活拮据，平时缺乏体力活动，肥胖，饮酒多年，每次饮白酒超过100毫升。有下呼吸道感染，乙肝阳性，高密度脂蛋白胆固醇异常，血压：收缩压120—129mmHg,舒张压80—89mmHg。根据该女士上述的身体状况及特点，该女士可能患糖尿病的主要危险因素包括()高密度脂蛋白胆固醇异常肥胖乙肝阳性缺乏体力活动下呼吸道感染...
An atom has the following electron configuration. 1s^22s^22p^63s^23p^4 How many valence electrons does this atom have? How many valence electrons are in each of the following atoms? a. Mg b. C c. Br d. Cs What are valance electrons? How many val...
Answer to: How many valence electrons does S have? Periodic Element S Atoms have several layers, with the nucleus at the center and electrons surrounding it. Electrons on the outermost layer, or shell, of the atom, are called valence electrons. How many they have and how they are arranged...
How many valence electrons does Ne have? How many valence electrons does terbium (Tb) have? How many valence electrons are in each of the following atoms? a. Mg b. C c. Br d. Cs How many total valence electrons are in O_2?
have failed. Fluorine is an exception. Due to its smaller weight, fluorine atoms tend to be added to molecules more generously, especially to block a metabolic hotspot or to alter the basicity/acidity of a neighboring group. Only 6.5% of the drugs approved...
Why do certain atoms want electrons more and others want them less? Remember that atoms want to have a full valence shell. This means that many atoms want to have eight electrons in the valence shell. This can happen with the help of ionization and/or bonding. ...
A hydrogen bond is aweak chemical bondthat occurs between hydrogen atoms and more electronegative atoms, like oxygen, nitrogen and fluorine. The participating atoms can be located on the same molecule (adjacent nucleotides) or on different molecules (adjacent nucleotides on different DNA strands). Hy...
example,carbon atomsalways have six protons;hydrogen atomsalways have one; andoxygen atomsalways have eight. Different versions of the same element, called isotopes, can have a different number of neutrons. Elements can also gain or lose electrons to become charged, in which case they are called...
The Wonders of the Periodic Table How Atomic Bombs Work: A Simple Overview Atoms vs. Molecules vs. Compounds: What's the Difference? The Chemistry of Alkenes: Structure, Naming, Uses & Reactions
Nitrogen trichloride is more reactive. This primarily based on 2 factors: the size of the atoms and the electronegativity of the atom. Fluorine has an electronegativity of roughly 4, while chlorine has an electronegativity of roughly 3. In layman's terms, this means fluorine holds onto electrons...