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
Pie
3 years ago
11

A neutral atom in the ground state has four electrons in its fifth and outermost principal energy level. What element is it?

Chemistry
1 answer:
Zepler [3.9K]3 years ago
7 0

Answer:

Tin

Explanation:

Tin is an element which belongs to the carbon family in the periodic table. It lies in group 14 of the periodic table i.e. IV a.

The symbol of Tin is Sn. Tin has 50 electron in total. Its atomic number is 50. The 50 electrons of tin are divided in its five energy shells. The outer most or the valence shell contains 4 electrons in the ground state.

The number of electrons present per shell in tin is : 2, 8, 18, 18, 4.

The electronic configuration of tin is : [Kr] 4d¹⁰5s²5p²

You might be interested in
A 1.45 g sample of phosphorus burns in air and forms 2.57 g of a phosphorus oxide. Calculate the empirical formula of the oxide.
bija089 [108]

Answer:

P2O3

Explanation:

Firstly, we know that the phosphorus would absorb oxygen from air to form its oxide. We already know the mass of the phosphorus, we can get the mass of the oxygen by subtracting the mass of the phosphorus from the mass of the oxide.

The mass of the oxygen is 2.57 - 1.45 = 1.12g

From here, we covert these masses to moles by dividing by the atomic masses of phosphorus and oxygen respectively.

The atomic mass of phosphorus is 31 while that of oxygen is 16.

P = 1.45/31 = 0.046774193548

O = 1.12/16 = 0.07

We now divide by the smallest which is that of phosphorus.

P = 0.046774193548/ 0.046774193548= 1

O = 0.07/ 0.046774193548 = 1.5

We then multiply the answers by 2 for conversion to whole numbers. Making P = 2 and O = 3

The empirical formula is thus P2O3

5 0
3 years ago
When a wavelength (increases/decreases) the frequency (increases/decreases) and the energy (increases/decreases)
tangare [24]

Answer:

As a wavelength increases in size, its frequency and energy (E) decrease. From these equations you may realize that as the frequency increases, the wavelength gets shorter. As the frequency decreases, the wavelength gets longer. There are two basic types of waves: mechanical and electromagnetic

Explanation:

hope it helps

plz mark it as brainlist

7 0
3 years ago
Magnesium has three naturally occurring isotopes with masses of 23.99, 24.99, and 25.98 amu and natural abundances of 78.99%, 10
Darya [45]
Atomic mass of magnesium = (23.99 x 78.99%) + (24.99 x 10.00%) + (25.98 x 11.01%)
= 24.31 g/mol
5 0
3 years ago
An(A)=25,n(B)=40,n(AuB)=50<br><br>AnB​
puteri [66]

Answer:

5879

Explanation:

3896_+746864uyrhufhj

5 0
3 years ago
you are investigating an organic compound. you discover the following: it contains no hydrogen atoms. what property do you expec
pashok25 [27]
This can be, for example, halogensubstituted hydrocarbons.
CCl₄, C₂F₆.

Or halides halocarboxylic acids, and other compounds.
      O
      II
Cl₃C-Cl
6 0
3 years ago
Read 2 more answers
Other questions:
  • For each example of a phase change, identify whether heat is absorbed from the surroundings or
    11·1 answer
  • How many conversion factors would you need to use to find the number of liters in a cubic decimeter? What are they?
    9·1 answer
  • The language of science is _____?
    11·2 answers
  • Estructura 7.2 completar repaso 1 - ¿lógico o ilógico? 1 - ¿lógico o ilógico? listen and indicate whether each question and resp
    5·1 answer
  • A flexible container is put in a deep freeze. Its original volume is 3.00 m3 at 25.0°C. After the container cools, it has shrunk
    5·1 answer
  • Calculate the number of moles of 2 g hydrogen gas
    8·1 answer
  • What are 4 caristics of metals
    13·1 answer
  • 1. How many elements are in the following equation, FeCrO4 ?<br> 1<br> 2<br> 3<br> 4<br> O
    6·2 answers
  • My Teacher didn't teach us this please help
    14·1 answer
  • S308<br> what’s the name to this
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!