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
Sladkaya [172]
3 years ago
8

The diagram shows the box for an element in the periodic

Chemistry
1 answer:
mr_godi [17]3 years ago
6 0

Answer: A 13

Explanation: hope this helps!

You might be interested in
When we experience higher than normal low tides and lower than normal high tides we are experiencing?
DanielleElmas [232]

Answer: a full or new moon

Explanation:

3 0
3 years ago
Read 2 more answers
Atoms of which element have the greatest tendency to gain electrons?
Anastasy [175]
Fluorine. 

Because:- Atoms want to become stable, for an atom to become stable, they need 8 valence electrons. Since Fluorine has 7 valence electrons, it only needs one more electron to become stable and have an octet. An octet is when an atom/element has 8 valence electrons. Since Fluorine will need to gain an electron, it will have a negative charge, and become an anion. 
8 0
3 years ago
Read 2 more answers
20 POINTS 2 QUESTIONS CAN YOU ANSWER THEM ???
olasank [31]
The correct options are as follows:
1. A.
A synthesis reaction is a type of reaction in which two or more reactants combine together to form only one product. Synthesis reaction always release energy in form of light and heat, therefore, they are usually exothermic reactions. In the option given in A, nitrogen and nitrogen combine together to form ammonia; this  is a synthesis reaction.
2. D
A radioactive half life refers to the amount of time it will take for half of an original radioactive isotope to decay. 
In the question given above, the half life of the element is 1000. Thus, in 1000 years only half of the original amount will remain. In another 1000 years only 1/4 of the original amount will remain and in another 1000 years only 1/8 of the original amount will remain. Therefore, it will take 3 half lives before 1/8 of the original sample remain.<span />
6 0
3 years ago
Read 2 more answers
Why is combustion of fuel necessary for heat engines to do work?
azamat

Because during combustion reaction, heat energy is released and it's this energy that is converted to work

6 0
3 years ago
Read 2 more answers
18 grams<br> 4 kilograms<br> 8 kilograms
Rina8888 [55]

Answer:

1 18 grams

2 500g

4 960 grams

5 7 kilograms

5 0
3 years ago
Other questions:
  • 6 types of asexual reproduction
    14·1 answer
  • Looking for a bf ( NO REPORT Fr )
    9·2 answers
  • Which of the following is a characteristic property of the noble gases?
    9·2 answers
  • What is not a major type of human pathogen?
    10·1 answer
  • An NHTSA study found that the average inpatient costs for crash victims who were not using safety belts were __________ percent
    9·1 answer
  • For each part below, use the data below to calculate ΔG at 215 K for each of the following reactions. Then use the data in the c
    9·1 answer
  • True or false? A weather station gathers data about weather conditions for a specific spot on land.
    14·2 answers
  • 3. Why do elements in group 1-17 react to form bonds?
    6·1 answer
  • What are the chemical symbols for the elements calcium carbon and chlorine respectivly
    14·1 answer
  • Help me please really only answer if u know the answer
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!