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
SSSSS [86.1K]
3 years ago
11

Explain why a magnesium atom is smaller than atoms of both sodium and calcium.

Chemistry
1 answer:
hodyreva [135]3 years ago
5 0
In the periodic table, there is a size trend.
The trend occurs horizontally and vertically on the table.
- From right to left, the atomic radius gets larger.
- From top to bottom, the atomic radius gets larger.

The reasoning for this is the additional energy levels and electrons being added as you go from right to left or top to bottom.
We can see that Magnesium is higher and more right in the periodic table than sodium and calcium.
Thus, Magnesium has a smaller atomic radius than both sodium and calcium
You might be interested in
đun nóng lipit cần vừa đủ 40kg dung dịch NAOH 15%.Giả sử phản ứng xảy ra hoàn toàn. Khối lượng glixerol thu được là bao nhiêu?
snow_tiger [21]

bl3eeeeee pklm k sy d kw mg sgt yn

7 0
2 years ago
Sulfuric acid (H2SO4) has a molar mass of 98.1 g/mol. How many oxygen atoms are found in 75.0 g of H2SO4? A. 1.15 × 10^23 B. 1.8
Margarita [4]

Answer:

B

Explanation:

first find the no. Of moles of H2SO4

=  75/98.1

= 0.7645

Next step

In on mole of H2SO4 the no.of oxygen atom is 4.

1 H2SO4 : 4 O

0.7645  : x                     x= 0.7645x4= 3.0581

next multiply avogadros constant

3.0581 x 6.022× 10^23 =1.84x10^24

3 0
4 years ago
Which of the following describes an exothermic reaction?
sattari [20]

Answer:

The answer to your question is: second option.

Explanation:

An exothermic reaction is a reaction that releases energy to the environment.

Thermal energy is absorbed by the system. This sentence is describing an endothermic reaction.

Thermal energy is absorbed by the surroundings. This sentence is describing an exothermic reaction.

Thermal energy is not transferred.  This sentence is describing an isolated system.

The initial and final temperatures of the system remains the same. This option is incorrect is not describing an exothermic reaction.

7 0
4 years ago
Which type of basin forms at transform boundaries?<br><br> rift<br> wedge<br> arc<br> strike-slip
Blababa [14]

Answer:

Strike slip forms at transform boundaries

4 0
3 years ago
Read 2 more answers
Define meteorologist.
Ivenika [448]

Answer:

The scientific study of the atmosphere and of atmospheric conditions, especially as they relate to weather and weather forecasting.

5 0
3 years ago
Read 2 more answers
Other questions:
  • What is the correct sequence of eras of the geologic time scale in order from oldest to youngest ?
    9·2 answers
  • When liquid silver nitrate and liquid sodium chloride are combined, solid silver chloride forms along with a new liquid, sodium
    14·2 answers
  • Please help lol I dont understand it...
    5·1 answer
  • What are the two main ways that minerals are classified
    13·1 answer
  • What is the mass number of an ion with 108 electrons, 159 neutrons, and a 1 charge?
    7·1 answer
  • Explain your observations in term of how tempurature affects paritcle motion and how liquid changes to a solid
    8·1 answer
  • Which statement best describes most tundra animals?
    13·1 answer
  • 27. Interpreting Concepts One way to make lemonade is
    8·1 answer
  • If a body does not have enough potassium, how might that affect neuronal firing?
    10·1 answer
  • What is the approximate power per area emitted by the inside wall of an oven when baking a cake in w/m2?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!