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
Alexeev081 [22]
3 years ago
12

Identify whether longhand notation or noble-gas notation was used in each case below. Potassium (K): 1s22s22p63s23p64s1

Chemistry
2 answers:
jarptica [38.1K]3 years ago
7 0

Answer:

longhand notation

Explanation:

in the longhand nota8tion all the electronic configuration of the element is written as it is obtained from the electronic configuration diagram and in the electronic configuration of noble-gas the electronic configuration of the full layer closest to the element is searched, which usually corresponds to the configuration of a noble gas and the full layer configuration corresponding to the noble gas is replaced with the gas symbol

Longhand notation

K= 1s^2 2s^2 2p^6 3s^23p^64s^1

argon electronic configuration

Ar=1s^2 2s^2 2p^6 3s^23p^6

Noble-gas notation

K=[Ar] 4s^1

Vaselesa [24]3 years ago
3 0

<u>Answer:</u> The given electronic configuration is long hand notation.

<u>Explanation:</u>

Long-hand notation of representing electronic configuration is defined as the arrangement of total number of electrons that are present in an element.

Noble-gas notation of representing electronic configuration is defined as the arrangement of valence electrons in the element. The core electrons are represented as the previous noble gas of the element that is considered.

The given electronic configuration of potassium (K): 1s^22s^22p^63s^23p^64s^1

The above configuration has all the electrons that are contained in the nucleus of an element. Thus, this configuration is a long-hand notation.

You might be interested in
Explain the difference between a base and an alkali.
Nataly_w [17]

Answer:

a base is something that reacts with an acid to form water and salt , an alkai is any base that is soluble in water

5 0
2 years ago
Why flame tests are not useful for all elements?
Shalnov [3]
<span>Not all elements have strong visible spectra in a flame</span>
3 0
3 years ago
Read 2 more answers
A student ran the following reaction in the laboratory at 671 K: 2NH3(g) N2(g) + 3H2(g) When she introduced 7.33×10-2 moles of N
vaieri [72.5K]

Answer:

Kc = 8.05x10⁻³

Explanation:

This is the equilibrium:

                 2NH₃(g)   ⇄     N₂(g)     +     3H₂(g)

Initially       0.0733

React         0.0733α          α/2                3/2α

Eq     0.0733 - 0.0733α    α/2                0.103

We introduced 0.0733 moles of ammonia, initially. So in the reaction "α" amount react, as the ratio is 2:1, and 2:3, we can know the moles that formed products.

Now we were told that in equilibrum we have a [H₂] of 0.103, so this data can help us to calculate α.

3/2α = 0.103

α = 0.103 . 2/3 ⇒ 0.0686

So, concentration in equilibrium are

NH₃ = 0.0733 - 0.0733 . 0.0686 = 0.0682

N₂ = 0.0686/2 = 0.0343

So this moles, are in a volume of 1L, so they are molar concentrations.

Let's make Kc expression:

Kc= [N₂] . [H₂]³ / [NH₃]²

Kc = 0.0343 . 0.103³ / 0.0682² = 8.05x10⁻³

3 0
3 years ago
In an isolated system:
ipn [44]

Answer:

isolated system (plural isolated systems) (physics) A system that does not interact with its surroundings. Depending on context this may mean that its total energy and/or momentum stay constant.

Explanation:

An isolated system is a thermodynamic system that cannot exchange either energy or matter outside the boundaries of the system. ... The system may be enclosed such that neither energy nor mass may enter or exit.

is there both?

7 0
3 years ago
Whick ions profuce similar colors in the flame tests?
arlik [135]

Ba2+ and Cu2+, and Sr2+ and Li+

5 0
3 years ago
Other questions:
  • Sodium is produced by electrolysis of molten sodium chloride. what are the products at the anode and cathode, respectively?
    15·1 answer
  • For many purposes we can treat nitrogen as an ideal gas at temperatures above its boiling point of - 196.°C.
    12·2 answers
  • When water turns to ice does it add or take away energy?
    6·1 answer
  • Using the following phase diagram, the area labeled A is in what phase?
    12·1 answer
  • The proteins of all living things require ___ geometry of amino acids. <br><br><br> ‘L’ or ‘D’
    14·1 answer
  • Given its reactive nature, oxygen is essential to cellular metabolic reactions. Peroxisomes use oxygen to break down fatty acids
    12·1 answer
  • When zn(oh)2(s) was added to 1.00 l of a basic solution, 1.09×10−2 mol of the solid dissolved. what is the concentration of oh−
    6·2 answers
  • Using Reaction A, how many grams of CO2 can be created from 5.67 moles of water?
    14·1 answer
  • Consider the reaction of SO₂ to form SO₃ at standard conditions.(b) Why is the reaction not performed at 25°C?
    7·1 answer
  • 7. A bottle found on a shelf contains either ethanol (density 0.789g/mL) or antifreeze (ethylene
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!