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skad [1K]
3 years ago
10

What is the atomic number, mass number, element symbol, group number, and period number for oxygen?

Chemistry
1 answer:
yawa3891 [41]3 years ago
4 0

Answer:

Atomic no. = 8

Mass no. = 16

Period no. = 2

Group no. = 6

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Cuales elementos tienen solo un electrón de valencia ​
aleksley [76]

Answer:

En el caso del sodio, la valencia es 1, ya que tiene un solo electrón de valencia, si pierde un electrón se queda con el último nivel completo.

Explanation:

Grupo de la tabla periódica Electrones de valencia

Grupo 14 (IV) (Grupo del carbono) 4

Grupo 15 (V) (Grupo del nitrógeno ) 5

6 0
3 years ago
Help me please I need to pass this test
FinnZ [79.3K]

Answer:

It could be B or C eighter one

3 0
3 years ago
Consider the equilibrium reaction. 2 A + B − ⇀ ↽ − 4 C After multiplying the reaction by a factor of 2, what is the new equilibr
vredina [299]

Answer : The correct expression for equilibrium constant will be:

K_c=\frac{[C]^8}{[A]^4[B]^2}

Explanation :

Equilibrium constant : It is defined as the equilibrium constant. It is defined as the ratio of concentration of products to the concentration of reactants.

The equilibrium expression for the reaction is determined by multiplying the concentrations of products and divided by the concentrations of the reactants and each concentration is raised to the power that is equal to the coefficient in the balanced reaction.

As we know that the concentrations of pure solids and liquids are constant that is they do not change. Thus, they are not included in the equilibrium expression.

The given equilibrium reaction is,

4A+2B\rightleftharpoons 8C

The expression of K_c will be,

K_c=\frac{[C]^8}{[A]^4[B]^2}

Therefore, the correct expression for equilibrium constant will be, K_c=\frac{[C]^8}{[A]^4[B]^2}

4 0
3 years ago
Explain how temperature and precipitation are affected by latitude and the sun's rays.
Contact [7]
Latitude and Temperature

At the equator, the Sun's rays are most direct. This is where temperatures are highest. At higher latitudes, the Sun's rays are less direct. The farther an area is from the equator, the lower its temperature.
8 0
2 years ago
Read 2 more answers
A metallic bond is formed when
Debora [2.8K]

Answer:

A metallic bond is formed by the attraction between positively charge metal ions and the electrons around the ions.

Explanation:

Hope this helps.

7 0
3 years ago
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