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
Minchanka [31]
3 years ago
14

#1. Which of the following is a reasonable ground-state electron configuration? A.-1s21p62s22p63s2/ B. -1s22s22p63s23p64s24d8/ C

. -1s22s22p63p6/D. -1s22s22p63s1 #2. Which of the following is a possible noble gas notation? A.-[Xe] 6s26p6/B. -[Kr] 5s25d85p6 /C.-[Xe] 6s25d106p4/D. -[Kr] 5s24d105p3
Chemistry
2 answers:
Sladkaya [172]3 years ago
6 0
A ground state electron configuration follows the Aufbau Principle that states that electrons should be filled up in orbitals in increasing energy. In the given sequences, the right configuration is <span>1s2 2s2 2p6 3s2 3p6 4s2 3d8. The choice that conforms to this sequence is D. In 2) the possible confirmation that follows Aufbau's principle is D. </span>
nadezda [96]3 years ago
6 0

Answer:

1) D. -1s2 2s2 2p6 3s1: It is reasonable configuration.

2) [Xe] 6s2 6p6:

Explanation:

A.-1s2 1p6 2s2 2p6 3s2: it is not possible as first shell has only one subshell which is "s". 1p does not exist.

B. -1s2 2s2 2p6 3s2 3p6 4s2 4d8: not possible as first 3d orbital will be filled followed by 4p.

C. -1s2 2s2 2p6 3p6:It is not possible as first 3s orbital will be filled than 3p6.

D. -1s2 2s2 2p6 3s1: It is reasonable configuration.

2)  

A.-[Xe] 6s2 6p6: completely filled so it cannot be noble gas configuration

B. -[Kr] 5s2 5d8 5p6 : Partial filled so it cannot be noble gas configuration

C.-[Xe] 6s2 5d10 6p4: Partial filled so it cannot be noble gas configuration

D. -[Kr] 5s2 4d10 5p3:Partial filled so it cannot be noble gas configuration

You might be interested in
How would an increase in carbon dioxide concentration in the atmosphere change the green house effect? A. Carbon dioxide would c
Elis [28]

Answer:

D

Explanation:

7 0
3 years ago
Brownian motion is not observed in a mixture that includes two phases. Which best identifies the mixture? [A} a colloid
Hoochie [10]

b, a suspension

Hope this helped :)

3 0
3 years ago
What does the energy hill represent on an energy diagram?
Butoxors [25]

Answer:

The correct answer is option D.

Explanation:

When a chemical reaction proceeds the reactants are converted into products. The energy hill represents the potential energy of the reaction.

There are two conditions: If the reaction is endothermic than the energy of the products is greater than the energy of the reactants and  ΔH  is positive. This energy gain is shown in the form of a peak.  In an exothermic reaction, the energy of the products is lower than the reactants and  ΔH  is negative.

So the suitable option is D which states that the reaction is endothermic and the potential energy gained by the products is higher when a reaction proceeds.

6 0
3 years ago
How many molecules are there in 4.00 l of oxygen gas at 500.∘ c and 50.0 torr?
Oliga [24]
From  the  ideal  gas law   
pv=nRT , n  is  therefore PV/RT
R is  the
R is  gas  constant =62.364 torr/mol/k
P=500torr
 V=4.00l
T=500+273=773k
n={(500 torr x 4.00l)/(62.364 x773k)}=0.041moles
the  number  of  molecules=moles  x avorgadro costant that is  6.022x10^23)
6.022 x 10^23)  x0.041=2.469 x10^22molecules
3 0
3 years ago
Which of the following molecules or ions has a bent shape?
zavuch27 [327]
I think C or OF2.I sorry if I was wrong.
4 0
3 years ago
Other questions:
  • You need to make 10 mL of 2 mg/ml solution of protein and you have 25 mg/mL solution. How much protein solution and water do you
    5·1 answer
  • What stores water, waste, and nutrients for the cell? A Plasma Membrane B Vacuole C Golgi Body D Nucleus
    13·1 answer
  • Give 3 examples of things that are not matter
    5·2 answers
  • How many atoms are in the peroxide H2O2 molecule? Explain.
    13·2 answers
  • An unknown compound contains only carbon, hydrogen, and oxygen (cxhyoz). combustion of 4.50 g of this compound produced 6.60 g o
    11·1 answer
  • PLEASE ANSWER: The density of a gas at STP is 0.75 g/L. What is the mass of this gas?
    15·1 answer
  • What are two ways to describe concentration? How do they differ from one another?
    6·2 answers
  • 147,320 g has significant figures
    13·1 answer
  • The atoms of platinum and silver are identical (true or false)
    6·2 answers
  • - A beam of electrons has.....
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!