1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
stira [4]
3 years ago
11

Which orbital is the first to fill with electrons in a given principal energy level?

Chemistry
2 answers:
olasank [31]3 years ago
8 0
<h2>Answer:</h2>

<u>The right option is</u><u> (B) S orbital</u>

<h2>Explanation:</h2>

Each orbital can hold two electrons. One spin-up and one spin-down. The first principal energy level contains only an s sublevel; therefore, it can hold a maximum of two electrons.

The order in which the orbitals are filled is given below

1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p, 6s, 4f, 5d, 6p, 7s, 5f, 6d, 7p, 8s

Mkey [24]3 years ago
5 0

e) both s and p

hope this helps!

You might be interested in
Both of calciums electrons are in its innermost shell. Explain why.
zimovet [89]

The atomic number of calcium is 20 which means it has 20 protons and as an atom (not an ion) it also has 20 electrons. These are in four energy levels (1 though 4) .


6 0
3 years ago
The IUPAC rules permit the use of common names for a number of familiar phenols and aryl ethers. These common names are listed h
fgiga [73]

Explanation:

a. Vanillin(4-hydroxy-3-methoxybenzaldehyde):

In its structure hydroxl group will be present on para position of the benzaldehyde ring and methoxy group on meta position.

b. Thymol (2-isopropyl-5-methylphenol):

In its structure isopropyl group will be present on ortho position of the phenol ring and methyl group on meta position.

c. Carvacrol (5-isopropyl-2-methylphenol):

In its structure isopropyl group will be present opposite to methyl group which is present ortho position in a phenol ring.

d. Eugenol (4-allyl-2-methoxyphenol):.

In its structure allyl group will be present on para position of the phenol ring and methoxy group on ortho position.

e. Gallic acid (3,4,5-trihydroxybenzoic acid):

In its structure hydroxyl group will be present on both meta positions and on para position of the benzoic acid ring.

f. Salicyl alcohol (o-hydroxybenzyl alcohol):

In its structure, -CH_2OH group is linkedto benzene ring and in respect to that hydroxyl group is present at ortho position of the ring.

6 0
3 years ago
Water ionizes by the equationH2O(l)⇌H+(aq)+OH−(aq)The extent of the reaction is small in pure water and dilute aqueous solutions
tia_tia [17]

Explanation:

H_2O(l)\rightleftharpoons H^+(aq)+OH^-(aq)

The value of K_w :

K_w=[H^+][OH^-]

a. pOH = 3.51

The sum of pH and pOH is equal to 14.

pH + pOH = 14 (at 25°C)

pH = 14 - 3.51 = 10.49

The pH of the solution is defined as negative logarithm of hydrogen ion concentration in solution.

pH=-\log[H^+]

10.49=-\log[H^+]

[H^+]=3.2\times 10^{-11}

3.2\times 10^{-11} Mis the H^+ concentration for an aqueous solution with pOH = 3.51 at 25°C.

b.

At a certain temperature, the pH of a neutral solution is 7.56.

Neutral solution means that concentration of hydrogen ion and hydroxide ions are equal.

[H^+]=[OH^-]

7.56=-\log[H^+]

[H^+]=2.754\times 10^{-8} M

The value of K_w at at this temperature:

K_w=[H^+][OH^-]

K_w=[H^+][H^+]

K_w=(2.754\times 10^{-8})^2=7.6\times 10^{-16}

The value of K_w at at this temperature is 7.6\times 10^{-16}.

5 0
4 years ago
Name the type of reaction: 8 Fe + S8 → 8 FeS
Hoochie [10]

Answer:

combined nation

Explanation:

it is combination reaction.

6 0
3 years ago
Will soapy water evaporate faster than water
love history [14]
The rate of evaporation would decrease because of
the formation of bonds between the soap and the water.
So, no. Regular water evaporates faster than soapy water
4 0
4 years ago
Other questions:
  • which one is correct:. . A)Na+ is smaller than K+. B)K+ is smaller than Na+. C)As3- is smaller than Sb3-. D)Sb3- is smaller than
    12·2 answers
  • Determine how many moles of Ba(OH)2 are required to completely neutralize 0.432 mole of HC2H3O2.
    7·2 answers
  • Mole-Atom Conversions
    15·1 answer
  • In a system with 4 atoms and 1 lone pair, predict whether the lone pair will be in a B site or an A site? Explain.
    12·1 answer
  • How many grams are in 1 mol of Li?
    5·1 answer
  • When a polar bond is formed between 2 atoms which atom receives a partial positive charge
    11·1 answer
  • Which of the following would increase the pressure of a gas?
    12·1 answer
  • HELP WILL GIVE BRANLIEST
    5·2 answers
  • How many moles of Cu2S are produced when 6.1 moles of Cu is reacted w<br> excess S?<br> Cu +S - Cu2S
    8·1 answer
  • Select the correct answer. which substance in this redox reaction is the oxidizing agent? cu 2agno3 → 2ag cu(no3)2 a. n b. agno3
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!