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PSYCHO15rus [73]
2 years ago
10

What happens to the number of valence electrons as you move from element 1 to element 18 on the periodic table?

Chemistry
2 answers:
BARSIC [14]2 years ago
6 0

Answer:

B

Explanation:

the group number is=valence electrons. element 1 is in group 1 element 18 is in group 8. 1<8

zysi [14]2 years ago
3 0

Answer:

the answer is b

Explanation:

i just know

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Sound waves move the slowest through which medium :<br> water<br> ice<br> air<br> wood
sasho [114]

Answer

Sounds travel slowest in gasses so it would be air

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2 years ago
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What is the difference between intermolecular forces and intramolecular forces
MrMuchimi

Answer:

Intramolecular forces are the forces that hold atoms together within a molecule. Intermolecular forces are forces that exist between molecules.

Explanation:

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Intramolecular forces are categorized into covalent, ionic and metal bonds

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2 years ago
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State Hund's rule.
loris [4]

Answer:

C. The lowest-energy electron configuration of an atom has the maximum number of unpaired electrons, all of which have the same spin, in degenerate orbitals.

Explanation:

The Hund's rule is used to place the electrons in the orbitals is it states that:

1. Every orbital in a sublevel is singly occupied before any orbital is doubly occupied;

2. All of the electrons in singly occupied orbitals have the same spin.

So, the electrons first seek to fill the orbitals with the same energy (degenerate orbitals) before paring with electrons in a half-filled orbital. Orbitals doubly occupied have greater energy, so the lowest-energy electron configuration of an atom has the maximum number of unpaired electrons, and for the second statement, they have the same spin.

The other alternatives are correct, but they're not observed by the Hund's rule.

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3 years ago
How do you think the amount of a material affects its tendency to sink or float? <br> ASAP
Ksivusya [100]

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it dependes on the material

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What is the value of the specific heat capacity of liquid water in j/mol·°c?
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