Answer:
b. The nitrogen atom shares one valence electron with each iodine atom, which also shares one valence electron each with the nitrogen atom.
Explanation:
The formula of nitrogen triiodide is NI3. In this compound, the nitrogen atom shares one valence electron with each chlorine atom which in turn also shares a valence electron with nitrogen.
Recall that covalent bonding involves a sharing of <u>valence </u> electrons. Transfer of electrons is typical of ionic bonds between a metal and a nonmetal. nitrogen and iodine are nonmetals hence they bond covalently.
Hence, the formation of NI3 leaves three lone pairs on each chlorine atom and one lone pair on the nitrogen atom.
Answer: pH = 2.68
Explanation: pH = - log[H3O^+] .
HCl reacts with water : HCl + H2O -> Cl^- + H3O^+
So [H3O^+] = c(HCl) = 0.0021 M
pH = - log(0.0021) = 2.68
The amount of energy required to remove one electron from the outermost shell.
Answer:
Sodium
Explanation:
Sodium is a pure chemical, hence it can be represented by the single chemical symbol Na.
Water has a chemical symbol of H2O, consisting of two, and not one, symbols, H and O.
Sulfate ion consists of a sulfide ion and four oxygen ions (SO4)2-. Hence, it does not fit.
Finally, potassium chloride has a chemical symbol of KCl. Consisting of two different chemical symbols, (K and Cl), it does not fit either.
Hope this helped!
Explanation:
1) A balanced equation for the reaction.
2) The name of the soluble slat produced by reaction between magnesium and hydrochloric acid is magnesium chloride.
Magnesium chloride =
3)Yes, chemical change has been taking.
This is because rearrangement of atom is taking place which resulted in formation of hydrogen gas amd magnesium chloride.
4) Moles of hydrogen gas produced = 2 mole
According to reaction, 1 mole of hydrogen gas is obtained from 2 moles of HCl.
Then 2 moles of hydrogen gas will be obtained form:
of HCl
4 moles of acid has reacted.