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
aleksandrvk [35]
1 year ago
9

How many valence electrons does magnesium (Mg) have?Question options:A) 6B) 2C) 12D) 0

Chemistry
1 answer:
wel1 year ago
4 0

INFORMATION:

We must find the number of valence electrons for magnesium

STEP BY STEP EXPLANATION:

In order to know the number of valence electrons for Mg, we need to locate the element in the periodic table

Since Mg is in the second group of the periodic table, it has two valence electrons.

ANSWER:

B) 2

You might be interested in
During which two minutes time period is the temperature of water changing faster?!
Vlad1618 [11]

Answer:

2-4 minutes

Explanation:

Fastest changing temperature means larger change in temperature when subtracting final temperature from initial temperature in a given time period (given time period is 2 minutes for all the options)

For 0-2 minutes, our final temperature was 40 (at 2 min) and initial temperature was  20 (at 0 min), thus temperature change was only 20 C.

For 2-4, our final temperature was 80 (at 4 min) and initial temperature was   40 (at 2 min) thus temperature change was 40 C.

For 4-6, our final temperature was 100 (at 6 min) and initial temperature was   80 (at 4 min) thus temperature change was 20 C.

We are not given temperature at 8 min so option D is invalid.

As we can clearly see that in a given 2 minute period, option B has the fastest change because it changed 40C when compared to other options that changed only 20C from starting temperature.

Hope that makes sense.

4 0
1 year ago
A chemical change involves the formation or the breaking of bonds. true or false
dusya [7]
The answer would be true.
5 0
2 years ago
Read 2 more answers
When a hurricane approaches land, people living directly on the
Tatiana [17]

Answer:

True

Explanation:

When a hurricane is dangerous enough that authorities say to evacuate, you should for your own safety.

3 0
3 years ago
Which notation designates a possible value for a principal energy level in an atom?
Nata [24]

Answer:

2

Explanation:

There are four quantum numbers:

Principal quantum number (n)

Azimuthal quantum number (l)

Magnetic quantum number (ml)

Principal quantum number (n)

It tell about the energy levels.  It is designated by n.

For example,

If n =2

It means there are two energy level present.

Azimuthal quantum number (l)

The azimuthal quantum number describe the shape of orbitals. Its value for s, p, d, f... are 0, 1, 2, 3. For l=3

(n-1)

4-1 = 3

it means principle quantum is 4 and electron is present in f subshell.

Magnetic quantum number (ml)

It describe the orientation of orbitals. Its values are -l to +l. For l=3  the ml will be -3 -2 -1 0 +1 +2 +3.

Spin quantum number (ms)

The spin quantum  number tells the spin of electron either its clock wise (+1/2) or anti clock wise (-1/2).

If the electron is added in full empty orbital its spin will be +1/2 because it occupy full empty. If electron is already present and another electron is added then its spin will be -1/2.

3 0
2 years ago
Which chemical reaction is the fastest?
pychu [463]

Answer:

C) drain cleaner fizzes up as it encounters blockages in a pipe

Explanation:

4 0
2 years ago
Other questions:
  • Chlorine can bond with fluorine to form CIF. Chlorine can also bond with lithium to form LiCI Which compound will have a greater
    12·1 answer
  • Gimme more info on natural resources
    10·1 answer
  • The identity of an element depends on the number of protons and neutrons in the nucleus. protons in the atom. neutrons in the at
    9·1 answer
  • What is 800kj to calories
    9·1 answer
  • What is the oxidation state of each element in the species Mn(ClO4)3
    5·2 answers
  • What are molecules and what are they made of?
    13·1 answer
  • How are Alaska and Hawaii alike?
    9·1 answer
  • Which of the following statements is true?
    7·2 answers
  • Which statement below is not true?
    9·1 answer
  • Hi......................... HELLO
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!