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
vlada-n [284]
3 years ago
13

Periodic table the first row of elements fits in the period blank after the element blank the second row of elements fits in per

iod blank
Chemistry
1 answer:
Bezzdna [24]3 years ago
7 0

Answer:

The first row fits in period 2

The second row fits in period 3

Explanation:

Elements arranged vertically in the periodic table in groups that share similar chemical properties.

Elements are also organized horizontally in rows or periods

The length of each period is determined by the number of electrons that can occupy the sublevels being filled in that period.

You might be interested in
Be sure to answer all parts. Acetone is one of the most important solvents in organic chemistry. It is used to dissolve everythi
Kazeer [188]

Answer:

Half life = 79.67 sec

Explanation:

Given that:

k = 8.7\times 10^{-3}\ s^{-1}

The expression for half life is shown below as:-

t_{1/2}=\frac{\ln2}{k}

Where, k is rate constant

So,  

t_{1/2}=\frac{\ln2}{8.7\times 10^{-3}\ s^{-1}}

t_{1/2}=114.94252\ln \left(2\right)\ sec=79.67\ sec

Half life = 79.67 sec

6 0
3 years ago
Carbon has four valence electrons, and oxygen has six valence electrons. If carbon and oxygen bond covalently, which of the foll
IRISSAK [1]
According to data the structures are as drawn below. 
Lewis structure is drawn by adding valence electrons of all elements present in a given compound.
In this case,
6 + 6 + 4 = 16 valence electron
secondly, the central atom is drawn in center and other outside, like carbon in center.
Then single bonds are drawn to connect the central atom to side atoms and 2 electrons for each single bonds are subtracted from total electrons, in this case 16-4=12, these 12 electrons are added to the most electronegative atoms, in this case to oxygen atoms. After that changes are made in a uch a way that each atom gets a complete octet number (8 electrons). 
So, Among these three  structures only the Blue structure is correct because in it each atom has a complete octet. While in other two oxygen or carbon has deficiency of electrons.

8 0
3 years ago
Answer These Please And Thank You!
docker41 [41]
No sorry i just clicked on this for free points
4 0
3 years ago
There are long, underwater mountain chains that divide the sea
natima [27]

Mid-Ocean Ridges

Two examples of Mid-Ocean Ridges are the Mid-Atlantic Ridge and the East Pacific Rise.

Explanation:

Mid-ocean ridges are mountain-like geographical features on the ocean floor. They usually line along the divergent boundaries of tectonic plates moving away from each other. This is because as the plates move in opposite direction, the vacuum in between the plates is filled by upwelling magma from the mantle. Usually the texture of the rocks that form these mountain ridges has bands. This is because, before the magma cools, the iron in the magma (due to its ferromagnetic property) aligns with the earths magnetic field. The earth magnetic flux flips over several 1000 years hence these bands orient themselves differently depending on the magnetic field orientation at the time they were formed.

Learn More:

For more on mid-ocean ridges check out;

brainly.com/question/7666628

#LearnWithBrainly

4 0
3 years ago
What does the aufbau principle suggest about electron configuration?
Scorpion4ik [409]

Answer:

Electrons occupy orbitals with the lowest energy first.

Explanation:

The Aufbau Principle states that electrons will fill the atomic orbitals with the lowest energy levels first, before occupying others with higher energy levels.

For example, electrons will fill the 1s orbital before filling the 2s orbital.

4 0
4 years ago
Read 2 more answers
Other questions:
  • A certain process has ΔH° > 0, ΔS° < 0, and ΔG° > 0. The values of ΔH° and ΔS° do not depend on the temperature. Which
    9·1 answer
  • Erioglucine is a blue-colored dye that absorbs its complementary color, red, in aqueous solution around 645 nm. Unfortunately, t
    6·1 answer
  • Which unit is used for measuring atomic mass?
    9·1 answer
  • Which coefficients balance the following?
    10·2 answers
  • The rate at which a certain drug is eliminated by the body follows first-order kinetics, with a half life of 68 minutes. Suppose
    6·1 answer
  • Heating Curve
    7·1 answer
  • If a sample of C-14 initially contains 1.2 mmol of C-14, how many millimoles will be left after 2285 years?
    12·1 answer
  • What is the mass of a sample containing 8.53×10 to the 24th power formula units of magnesium phosphate?
    9·1 answer
  • Give me answer friend.​
    14·1 answer
  • A student told me that it would take 3.5 weeks to read their chemistry textbook from start to finish. How long would it take in
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!