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
ExtremeBDS [4]
3 years ago
14

What are the groups on the periodic table let us predict how elements will react

Chemistry
1 answer:
cluponka [151]3 years ago
7 0

Answer:

The vertical columns are called groups.

Explanation:

Periodic table consist of vertical columns and horizontal rows.

Vertical columns are called groups while horizontal rows are called periods.

There are seven periods and 18 groups in periodic table.

The elements in same group have similar properties and can react in a similar way.

The elements in same group have same number of valance electrons that's why their reactivity is same.

Consider the example of alkaline earth metals. They are present in group two and have same number of valance electrons (two valance electrons).

They react with oxygen and form oxide.

2Ba   +   O₂   →    2BaO

2Mg  +   O₂   →    2MgO

2Ca +   O₂   →    2CaO

this oxide form hydroxide when react with water,

BaO  + H₂O   →  Ba(OH)₂

MgO  + H₂O   →  Mg(OH)₂

CaO  + H₂O   →  Ca(OH)₂

With sulfur,

Mg + S   →  MgS

Ca + S   →  CaS

Ba + S   →  BaS

You might be interested in
Why does every sample of water have the same boiling point?
Tamiku [17]

Answer:

beacuse water is same every where because it is the combination of h2 +o2 h2o which doesn't change while it is different

Explanation:

ok

8 0
3 years ago
WILL GIVE BRAINLIEST!!!
NemiM [27]

1)Is =425·G

2) Is=54· g

6 0
3 years ago
Which of the following statements about the sun's features are true?
Aleonysh [2.5K]
Solar flares form when prominences connect I think
4 0
3 years ago
Read 2 more answers
Which of the following is a negative effect of a volcano?
siniylev [52]

I believe it might be A. Damaged buildings.

B is a positive and so is Tourism.

6 0
3 years ago
When an aqueous solution of KBr is electrolyzed,
zhenek [66]
KBr + H2O = KOH + Br2 + H2

So we know that we need a 2 on the left of kbr so it would equal the right Br.

=2KBr
 now put a 2 in front of KOH since we need a 2k on right side

Now we put a 2 infront of H2O which wil make 4 h's and 2 o's

2h2o 

now it is balanced

2KBr + 2H2O = 2KOH + Br2 + H2

3 0
3 years ago
Other questions:
  • A 52.0-mL volume of 0.35 M CH3COOH (Ka=1.8×10−5) is titrated with 0.40 M NaOH. Calculate the pH after the addition of 23.0 mL of
    8·1 answer
  • Is it true or false that Science is a collection of facts that does not evolve. We have gained all the knowledge we can from sci
    8·1 answer
  • Three light sticks are activated at the same time. One stick is placed in a beaker of hot water, one in a beaker of ice water, a
    5·2 answers
  • Ethanol can react with hydrochloric acid to form chloroethane and water. When sulfuric acid is added, the
    15·1 answer
  • Is Acetaminophen ionic, molecular or organic compound
    12·2 answers
  • A 0.187 M weak acid solution has a pH of 3.99. Find Ka for the acid. Express your answer using two significant figures.
    5·1 answer
  • An ice cute at 0.0*C was dropped into 30.0 g of water in a
    15·1 answer
  • Which of the following is not part of the proper protocol for using acids and bases?
    12·1 answer
  • Suppose that 4.8 L of methane at a pressure
    12·1 answer
  • _________ flowing in the filament of an electric cell makes it glow
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!