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2 years ago

What is the correct electron configuration of the element with atomic number 20?

Chemistry

1 answer:

IgorLugansk [536]2 years ago

3 0

Answer:

D is the correct answer

s orbital contain 2

p orbital contains 6

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The substances sodium (Na), oxygen (O2), and sodium oxide (Na20) participate in this chemical reaction

Margaret [11]

Answer:

Explanation:

This is a synthesis or a combination reaction , which involves the oxygen combining with sodium to make one compound.

hope it helps.

you're welcome.

8 0

3 years ago

Oxygen, with an atomic number of 8, is a neutral atom and would have ___________ electrons in the first electron shell and _____

motikmotik

2 in the first shell and 6 in the second

8 0

2 years ago

In Period 2, as the elements are considered from left to

Elza [17]

Answer:

it will option B ,hope it helps

5 0

2 years ago

Given the following information, what is the concentration of H2O(g) at equilibrium? [H2S](eq) = 0.671 M [O2](eq) = 0.587 M Kc =

MAVERICK [17]

Answer: The equilibrium concentration of water is 0.597 M

Explanation:

Equilibrium constant in terms of concentration is defined as the ratio of concentration of products to the concentration of reactants each raised to the power their stoichiometric ratios. It is expressed as $K_{c}$

For a general chemical reaction:

$aA+bB\rightleftharpoons cC+dD$

The expression for $K_{eq}$ is written as:

$K_{c}=\frac{[C]^c[D]^d}{[A]^a[B]^b}$

The concentration of pure solids and pure liquids are taken as 1 in the expression.

For the given chemical reaction:

$2H_2S(g)+O_2(g)\rightleftharpoons 2S(s)+2H_2O(g)$

The expression of $K_c$ for above equation is:

$K_c=\frac{[H_2O]^2}{[H_2S]^2\times [O_2]}$

We are given:

$[H_2S]_{eq}=0.671M$

$[O_2]_{eq}=0.587M$

$K_c=1.35$

Putting values in above expression, we get:

$1.35=\frac{[H_2O]^2}{(0.671)^2\times 0.587}$

$[H_2O]=\sqrt{(1.35\times 0.671\times 0.671\times 0.587)}=0.597M$

Hence, the equilibrium concentration of water is 0.597 M

8 0

3 years ago

Will mark as brainiest Please help

Levart [38]

Answer:

metal sulfate
metal sulfate
copper sulfate
copper nitrate
copper chloride
copper phosphate
hydrochloric acid, water
Potassium, sulfuric acid, water

(Correct me if I am wrong)

4 0

2 years ago

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