Fluorine has an atomic number of 9 and a mass number of 19. How many electrons a
ID: 135520 • Letter: F
Question
Fluorine has an atomic number of 9 and a mass number of 19. How many electrons are needed to complete the valence shell of a fluorine atom?
How is an ionic bond formed?
What are ions
If an atom donates an electron it attains a __________ charge and is called an _____________and if it acquires an electron it attains a _____________ charge and is called a ______________
Sharing of electrons leads to ______________bond
What results from an unequal sharing of electrons between atoms?
What is the difference between covalent bonds and ionic bonds?
The atomic number of chlorine is 17. The atomic number of magnesium is 12. What is the formula for magnesium chloride
The atomic number of sulfur is 16. Sulfur combines with hydrogen by covalent bonding to form a compound, hydrogen sulfide. Based on the electron configuration of sulfur, we can predict that the molecular formula of the compound will be ________.
Is this reaction reversible or irreversible? 3 H2 + N2 ? 2 NH3.
Attraction of water molecules to one another is by ___________________.
What do cohesion, surface tension, and adhesion have in common with reference to water?
What is the correct definition of a calorie?
How many molecules of glycerol (C3H8O3) would be present in 1 L of a 1 M glycerol solution? 6.02 × 1023
How much energy s required to raise 5g of water from 0°C ice to 102°C steam (keep in mind the latent heat of vaporization and latent heat of freezing)
What is an acid and what is a base. What is a strong acid and strong base
A given solution contains 0.0001(10-4) moles of hydrogen ions [H+] per liter. What is the pH of this solution? Is this an acid or base? Hydrogen acceptor or donor
What would be the pH of a solution with a hydroxide ion [OH-] concentration of 10-12M. What would be the pH of a solution with a hydrogen ion [H+] concentration of 10-8M? How do buffers resist pH change?
What are the three types of isomers?
What is the difference between isotopes and isomers
Explanation / Answer
please ask questions separtely and not all together
1)It has an atomic number 9 ie it has 9 electrons and the electronic configuration is as follows: 1s2 2s2 2p5 so this shows that one electron is needed to complete octet by filling the 2p shell
2) ionic bond is formed by transfer of electrons from one atom to another. It is formed between oppositely charged ions in a chemical compund. The atom that loses electrons becomes positively charged ie cation and the one that gains electrons becomes negatively charged ie anion
3) It is a charged atom or molecular species which is formed due to the loss(cation) or gain(anion) of electrons