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Romashka-Z-Leto [24]
3 years ago
12

What observations can you make about the valence electrons in the following columns of the periodic table?

Chemistry
1 answer:
masha68 [24]3 years ago
8 0

Answer:

Column 1. They have one valence electron

Column 2. They have 2 valence electrons

Transition metal column. Variable oxidation states

Column 3–7. Valence electron ranges from 3 to 7 electrons

Column 8. Completely filled i.e no valence electron

Explanation:

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Kruka [31]
D is the correct answer !
3 0
3 years ago
A sample of argon gas at 55°C is under 845 mm Hg pressure. What will the new temperature be if the pressure is raised to 1050 mm
Maurinko [17]

Answer:

The final temperature at 1050 mmHg is 134.57 ^{\circ}C or 407.57 Kelvin.

Explanation:

Initial temperature = T = 55^{\circ}C = 328 K

Initial pressure = P = 845 mmHg

Assuming final  to be temperature to be T' Kelvin

Final Pressure = P' = 1050 mmHg  

The final temperature is obtained by following relation at constant volume

\displaystyle \frac{P}{P'}=\displaystyle \frac{T}{T'} \\ \displaystyle \frac{845 \textrm{ mmHg}}{1050 \textrm{ mmHg}} = \displaystyle \frac{328 \textrm{ K}}{T'} \\T' = 407.57 \textrm{ Kelvin}

The final temperature is 407.57 K

7 0
3 years ago
What is the electron configuration for iodine
iogann1982 [59]

Hello!

To find electron configuration for Idoine we need to understand the following steps:

  1. Finding the Atom's Atomic Number (tells us the specific number of electrons)
  2. Determining the Charge of the Atom
  3. Understanding the orbitals (Set S [Contains 2], P [Contains 3, Holds 6], D [Contains 5, Holds 10], F [Contains 7, Holds 14], and there are some theoritical ones.) [Overall the sets go SPDFGHIK
  4. Understanding notations in configuartion. The notations display the number of electrons in the atom and set.

In this case, for Iodine. If we follow these rules we can see that the electron configuration is [Kr] 4d^10 5s^2 5p^5. We use Krytpon in front because that is the last full and stable noble gas before this particular element. Atoms are just trying to be stable so the goal is to achieve that full shell.

7 0
3 years ago
The molecular scene depicts a gaseous equilibrium mixture at 460°C for the reaction of H2 (blue) and I2 (purple) to form HI. Eac
soldi70 [24.7K]

Answer:

Therefore, the value of K_{p} is 2 \times 10^{9} and value of \Delta G^{o} is -53.2 kJ/mol.

Explanation:

4 0
3 years ago
1
Levart [38]

Answer:

A

Explanation:

Friction is a force that opposes motion.

5 0
3 years ago
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