a. Explain, referring to sharing, losing or acquiring electrons, why 2 O atoms joined together are stable, whereas individually they are not. (Include mention of how many valence electrons are in the neutral atom.)
b. What kind of bond occurs in a molecule of O2?
c. Explain why electrolyte solutions will conduct electricity but covalent solutions will not.
d. What are the major cation and the major anion in extracellular fluid?
2007-03-17 01:25:55 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Biology
a. all atoms tend aquire a full valence shell either by ganing or losing electrons to achive stability as an oxygen atom has 6 electrons in its outer most shell therefore it has to aquire 2 more to complte its octate therefore it shares 2 electrons with anoter oxy atom in this way both oxy atoms get their octate complete neutarl oxy atom has 6 valance electros
b.covalent
c.electroltes contains positive cations and negative anions that move to oppositley charged electrodes ie negative cathode and positive anode respectively wherreas in covalent compounds no ions ie anions and cations are present therefore there is nothing to conduct electriciry
d. major cation of ecf : Na ion
major anion of ecf: Cl ion
2007-03-17 02:36:10 · answer #1 · answered by Anonymous · 0⤊ 0⤋
a) An oxygen molecule is an exception to the Octet Rule. molecular Oxygen is always found in the form O2. To be stable, they have to be together, because the stability only occurs during bonding. if they don't bond, then the atoms won't have any stability.
b) A covalent bond
c) Substances that give ions when dissolved in water are called electrolytes. These solutions conduct electricity due to the mobility of the positive and negative ions, which are called cations and anions respectively. Covalent bonding is a description of chemical bonding that is characterized by the sharing of pairs of electrons between atoms. In short, attraction-to-repulsion stability that forms between atoms when they share electrons is known as covalent bonding.
d) Extra Cellular Fluid (ECF):
- Main Cations: Sodium (140 mM) Potassium (4 mM) Calcium (2 mM)
- Main Anions: Chloride (110 mM) Hydrogen Carbonate (26 mM)
2007-03-17 08:53:45 · answer #2 · answered by mklaks 2 · 0⤊ 0⤋
As the previous two answerers have already completely answered question a, b, and d, I would like to make a complementary answer to c.
Electrolyte can conduct electricity because it has moblie ions and ions carry charges. They can move to supply electrons or receive electrons. But covalent bond does not have moblie electrons and mobile ions,
2007-03-17 09:49:56 · answer #3 · answered by penguin 1 · 0⤊ 0⤋
The answer to all of these questions are shells. Look at the structure and see if the shell wants more electrons or not.
2007-03-17 08:32:54 · answer #4 · answered by Mike M 4 · 0⤊ 0⤋