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Orlov [11]
3 years ago
13

What is the predicted electron configuration of Helium

Chemistry
1 answer:
Crank3 years ago
6 0

1s²

Explanation:

The predicted electron configuration of Helium 1s².

Helium is an element with atomic number of 2. it is located on the last group on the periodic table.

  • Electron distribution into the energy levels or sublevels of atoms can be shown using electronic configurations.

Here, the two electrons in Helium fills the first energy level with s-sublevel first.

The maximum number of electrons in the sub-level is 2: this gives the 1s² configuration.

Learn more:

Electronic configuration brainly.com/question/6312987

#learnwithBrainly

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When reactants and products are being formed at an equal rate in a chemical reaction, the ____. a. reaction is endergonic b. fre
attashe74 [19]
<h2>The answer is option b "free energy is zero"</h2>

Explanation

  • The reaction that has negative free energy are called exergonic reactions that means the reactants have more free energy than the product formed.
  • The reaction that has positive free energy are called endergonic reactions that means the final state or the products formed have more free energy than the initial state or the reactants.
  • The reaction that has zero free energy occurs when the free energy of both reactants and the products are same hence the rate of formation of products and reactants are equal.
  • Therefore, when reactants and products are being formed at an equal rate the free energy is zero.
3 0
3 years ago
Pbo.....<br>= 2Pb +......​
Colt1911 [192]

Answer:

It's

Explanation:

Pbo + c

= pb + co2

While balancing it becomes

2pbo + c = 2pb + co2

(I was also doing same qn)

7 0
3 years ago
5. Hydrogen is placed in group 1 in the modern periodic table.​
Rama09 [41]

Answer:

Hi, There! I'm here to help!

Hydrogen is placed in group 1 in the modern periodic table.​

This Statement Is True!

Explanation:

Hydrogen can form ionic compounds like other group I elements. Due to all of these similarities Hydrogen is placed in group I of the modern periodic table.

3 0
2 years ago
What is the atomic number of an atom?
ludmilkaskok [199]

Answer: The number of protons

Explanation:

4 0
2 years ago
Match the following associations. 1. + ΔHexothermic endothermic 2. E2 &lt; E¹exothermic endothermic 3. energy is absorbed exothe
Alisiya [41]

Explanation:

When heat is absorbed by reactants in a chemical reaction then the reaction is known as endothermic reaction.

Whereas when heat is released by reactants in a chemical reaction then the reaction is known as exothermic reaction.

1. When \Delta H is positive then it means heat is absorbed by reactants and reaction is endothermic.

2. When E_{2} < E_{1}, this means energy of products is less than the energy of reactants. Therefore, it is exothermic in nature.

3. When energy is absorbed then reaction is endothermic.

4. When E_{2} > E_{1}, this means energy of products is greater than the energy of reactants. Therefore, it is endothermic in nature.

5. When [tex]\Delta H is negative then it means heat is released by reactants and reaction is exothermic.

4 0
3 years ago
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