1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Romashka-Z-Leto [24]
2 years ago
6

How many valence electrons does an atom of Iodine have? a) 5 b) 6 c) 7 d) 8

Chemistry
2 answers:
baherus [9]2 years ago
8 0
The answer is 7 !! :)
BabaBlast [244]2 years ago
7 0

Answer: c) 7

Explanation:

You might be interested in
Given the unbalanced equation: Al + O2 → Al2O3
ArbitrLikvidat [17]
I believe it's 1. 9.
6 0
3 years ago
Given the unbalanced equation: PbCl₂ + Na₂CrO₂ ---> PbCrO₂ + NaCl. When properly balanced, the sum of the balancing coefficie
Veronika [31]

Answer:

A. 2

hope this helps :)

if you need an explanation let me know!!

3 0
3 years ago
Describe how water molecules interact with sodium chloride molecules in order for water to dissolve salt.
Phantasy [73]

Answer:

Sodium chloride is an ionic salt that completely dissociates in water.

Explanation:

Sodium chloride in water dissociates according to the equation.

NaCl (aq) → Na + (aq) + Cl- (aq)

While water stays in balance according to the equation

2H2O (l) ⇄ H3O+(aq)  +  OH-(aq).

By dissociating the solute in the solvent, the water molecules pick up the sodium cations as well as the chloride anions to break the bonds in the salt crystals and thus produce the dissolution

If the ions are analyzed separately, we see that Na + interacts with water, so it would be producing sodium hydroxide, releasing protons.  

If the reaction goes in the sense of products, the Na + would increase the concentration of [H +], however being a neutral salt the pH does not vary from 7, so the reaction would never go in the sense of products, but only reagents. That's why as the sodium hydroxide is a strong base, it only promotes the formation of water and the cation.

Na+  +  H2O  ←  NaOH  +  H+

The same situation occurs with chloride, since no matter how much you want to form hydrochloric acid, it dissociates by promoting the formation of water plus the corresponding anion. Na + and Cl- act as too weak conjugate acid and base, so the reaction would never go in the direction of products

Cl-  +  H2O  ←  HCl  +  OH-

3 0
3 years ago
Hello people ~<br>Help me with this question.<br>Thanks in advance!​
Alekssandra [29.7K]

Hello!

The pollution due to oxides of sulfur gets enhanced due to the

presence of :

  • (a) particulate matter
  • (b) ozone
  • (d) hydrogen peroxide

∴ The correct option is : <u>(4) (a),(b),(d) only</u>

3 0
2 years ago
Which statements are true of solutions?
Dimas [21]

Answer: they contain solutes and solvents, their particles must be evenly distributed, they may contain solid liquid and gas simultaneously, and they are homogeneous matter.

Explanation:

4 0
3 years ago
Other questions:
  • What happens in this reaction and why? <br><br> hept-3-yne + Br2 --&gt;
    15·1 answer
  • Consider the following data concerning the equation: H2O2 + 3I– + 2H+ → I3– + 2H2O [H2O2] [I–] [H+] rate I 0.100 M 5.00 × 10–4 M
    10·1 answer
  • Which compound has the highest melting point?
    6·2 answers
  • What is the Hsol for KBr k+ + br- ? The lattice energy is –679 kJ, the enthalpy of hydration for is –336 kJ/mol, and the enthalp
    5·1 answer
  • Which of the following would not increase the rate of most reactions? A. Removing an inhibitor B. Lowering the concentration of
    8·2 answers
  • 45) George is making spaghetti for dinner. He places 4.01 kg of water in a pan and brings it to a boil.
    6·1 answer
  • What two colors make pink?
    13·2 answers
  • Determine the percent composition of potassium dichromate, K2Cr2O7.
    14·1 answer
  • Which organ system carries materials to human tissues?
    13·1 answer
  • a small deviation from the resting membrane potential that occurs because ligand-gated or mechanically-gated channels open or cl
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!