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2 years ago

Hund's rule states that electrons must spread out within a given subshell before they can pair

Chemistry

1 answer:

Temka [501]2 years ago

6 0

Answer:

Groups 14, 15, and 16 have 2,3, and 4 electrons in the p sublevel (p sublevel has 3 "spaces" AKA orbitals), because Hunds says one in each orbital before doubling up if you had 2 electrons, group 14, they would both be in the first orbital, with 3 electrons, group 15, two in the first orbital one in the 2nd none in the 3rd. With 4 electrons, group 16, then you would have 2 in the first 2 orbitals and NONE in the 3rd.

Explanation:

If you are in group 13 you only have 1 electron so it can only be in one orbital. with group 17, you have 5 electrons, so 2 in the first 2 in the second and 1 in the 3rd, correct for Hunds rule anyway. Noble gasses, group 18, have 6 elecctrons, so every orbital is full any way you look at it.

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Which of the following is a renewable source of energy?

Pani-rosa [81]

Answer: D

Explanation:

Hydropower

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3 years ago

The Gateway Arch in St. Louis, MO is approximately 630 ft tall. How many U.S. half dollars would be in a stack of the same heigh

Paraphin [41]

Answer:

The number of half dollars in the stack of the height of the Gateway Arch in St. Louis is 89,313 half dollars

Explanation:

The given height of the Gateway Arch in St. Louis = 630 ft

The thickness of each half dollar = 2.15 mm

By conversion of factors, we have;

1 feet = 304.8 mm

Therefore;

630 ft. = 304.8 × 630 mm = 192,024 mm

The number of half dollars that will stack up to 630 ft or 192,024 mm, is therefore, given as follows;

The number, n, of half dollars in the stack of the height of the Gateway Arch in St. Louis = The height of the Gateway Arch in St. Louis/(The thickness of each half dollar)

n = 630 ft/(2.15 mm/(half dollar)) = 192,024 mm/(2.15 mm/(half dollar)) = 89,313.49 ≈ 89,313 half dollars

The number of half dollars in the stack of the height of the Gateway Arch in St. Louis = 89,313 half dollars.

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3 years ago

How are large polymers formed? by repetitive combinations of simple subunits by the addition of halogens to a small molecule by

Gre4nikov [31]

Answer:

How are large polymers formed? by repetitive combinations of simple subunits by the addition of halogens to a small molecule by combining a few different and larger molecules by combining many different and smaller molecules

Explanation:

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2 years ago

A student places a 12-gram cube of ice inside a container. After six hours, the student returns to observe the contents of the c

Gennadij [26K]

Answer:- C. The container contains 8 grams of liquid water and no ice.

Explanations:- In thermodynamics, "An open system is the one that exchanges energy and matter with it's surroundings."

If we look at all the choices then the total mass is 12 grams except for choice C. So, the correct choice is C as the mass in the container remains 8 grams since some of the amount is lost to the surroundings in the form of water vapors.

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3 years ago

During WW2, battleships would shoot their 16-inch main guns to project an 800km projectile at the enemy as far as 22 miles aways

Nesterboy [21]

The momentum of the projectile is 6.8 * 10⁵ kgm/s

<h3>Momentum and projectiles</h3>

Momentum of an object is the product of the mass of that object and its velocity.

Momentum, p = m*v

where m is mass of object

v is velocity of object

A projectile is an object launched into space and allowed to fall freely under the force of gravity.

The momentum of a projectile is conserved in the horizontal direction since no net force acts on the projectile in the horizontal direction.

using the formula for momentum;

p = m*v

Assuming the mass of the projectile to be 800 kg

Velocity of the projectile = 850 m/s

p = 800 kg * 850 m/s

p = 6.8 * 10⁵ kgm/s

Therefore, the momentum of the projectile is 6.8 * 10⁵ kgm/s

Learn more about momentum and projectiles at: https://brainly.in/question/201038

3 0

2 years ago