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
Nastasia [14]
3 years ago
8

I have 2 Valence electrons and 1 energy levels

Chemistry
2 answers:
ladessa [460]3 years ago
8 0

Answer:

Hydrogen (H) and helium (He) have a valence shell containing one and two electrons respectively. They make up the first period (row) of the periodic table. Their valence electron/s are in the first energy level (n=1) , as is denoted by 1s1 and 1s2.

Explanation:

Logic... if its wrong imma cry

natima [27]3 years ago
3 0

Answer:

Hydrogen(H) and Heluim(He)

Explanation:

These are the only two valennce electrons and 1 energy levels.

You might be interested in
A substance that has a uniform composition and is able to be separated by physical means
azamat
The answer is homogeneous mixture. It is a mixture which has uniform composition and properties all throughout. Mixtures can be separated by physical processes. Mixtures are systems that consist of two or more substances which are mixed but not chemically combined.
7 0
3 years ago
45.0 g of Ca(NO3)2 are used to create a 1.3 M solution. What is the volume of the solution
Stells [14]
As we know that Molarity is given as,

                                       M = moles / V 
Solving for V,
                                        V = moles / M ------------------(1)
Also, moles is equal to,
                                       moles = mass / M. mass -------------(2)
puting value of moles from eq. 2 into eq. 1,
                                       V = (mass / M.mass) / M
Putting values,
                                       V = (45 g / 164 g/mol) / 1.3 mol/dm³

                                       V = 0.21 dm³ 
6 0
3 years ago
How many attoms are equal 6.19 moles of hydrogen?​
Wittaler [7]

Answer:

3.727x10^24 atoms.

Explanation:

When calculating how many molecules are in a compound or element, we refer to Avogardo's number.

Your equation will look like this: 1 mole/ 6.022x10^23 molecules (Avogardo's number).

Multiply 6.19 by Avogardo's number to get your answer.

4 0
3 years ago
Which of the following statements concerning ionic compounds is
rewona [7]

Answer:

A

Explanation:

Ionic compounds are solids when at room temperature

8 0
3 years ago
While performing chores, Maria noticed that she would get shocked each time she touched her washing machine. Which of the follow
AlladinOne [14]
C is illogical so that is your answer
8 0
3 years ago
Other questions:
  • What is the nuclear binding energy for thorium-234? 2.78 × 10-10 J 3.36 × 10-14 J 1.67 × 1017 J 5.35 x 10-23 J
    14·2 answers
  • An equal number of moles of KI (potassium iodide) and MgI2 (magnesium iodide) are dissolved in equal volumes of water.
    11·1 answer
  • Which of the following is a nonrenewable energy source? A. coal B. solar C. wind D. hydropower E. burning biomass
    5·1 answer
  • What happens on the side of the earth opposite the moon
    11·2 answers
  • Charlie is doing a scientific investigation about the properties of light energy. For his experiment, he points a flashlight at
    13·2 answers
  • What are examples of a Theory ?
    11·1 answer
  • How many moles of carbon (C) are there in 92.5 g of C?
    10·1 answer
  • How many electrons are in 11B+3 ?
    11·2 answers
  • A student has a salt water solution. When the student adds more salt to the solution it completely dissolves. What type of solut
    12·2 answers
  • An atom with a high metallic character usually has a ____ electron affinity and a ____ atomic radius.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!