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
Mashutka [201]
2 years ago
9

3. The number of electrons and neutrons in an atom are 13 and 14, respectively. Find out the mass number, atomic number, valency

, and symbol of the element.
​
Chemistry
1 answer:
QveST [7]2 years ago
7 0

Answer:

Explanation:

3. The number of electrons and neutrons in an atom are 13 and 14, respectively. Find out the mass number, atomic number, valency, and symbol of the element.

For a neutral atom. number of protons =number of electrons=13

so since atomic number is the number of protons =13

mass number = protons + neutons =14+13 = 27

atomic number 13 is Aluminum (AL-(see periodic table)

The electronic structure for 13 electrons is 1s2s2p63s23p1

so Al has 3 electrons which are VALIENT and can react and when it loses the 3 it will have  CHARGE OF +3

You might be interested in
If Bert the Bat travels eastward at 540 mph with a tail wind of 6 mph. What is his actual speed?
miskamm [114]

Answer:

12 mph

Explanation:

6 0
3 years ago
Read 2 more answers
In a science lab, Cash mixes two clear liquids together in a beaker. Bubbles are produced, and a white solid forms and settles t
Greeley [361]

Answer:

A chemical change occurred, a gas and precipitate was produced

Explanation:

From the question , we are informed of science lab, where Cash mixes two clear liquids together in a beaker. Bubbles are produced, and a white solid forms and settles to the bottom.

In this case the change that took place is chemical change ( is one where new product are formed after two substance react) the bubbles that is produced signify the presence of gas in the product, white solid formed is reffered to as a precipitate( which is reffered to as solid that is been formed from a particular solution).

5 0
3 years ago
Which represents a balanced nuclear equation?
Anestetic [448]

Answer:

the answer is a

took it on edge

Explanation:

3 0
3 years ago
Calculate pH value in a solution that has a<br> concentration of 0.04 mol / dm^3 of H30+ ions?
Sergio039 [100]

Answer:288229262427020202625369201010910000000000000

Explanation: bcuz I said

4 0
3 years ago
Water molecules have a polarity, which allows them to be electrically attracted to other water molecules and other polar molecul
-BARSIC- [3]
<h3>Answer:</h3>

            Water molecules have a polarity, which allows them to be electrically attracted to other water molecules and other polar molecules by weak chemical bonds known as <u>Hydrogen Bond</u>.

<h3>Explanation:</h3>

                     Hydrogen Bond Interactions are those interactions which are formed between a <em>partial +ive</em> hydrogen atom bonded directly to most electronegative atoms (i.e. Fluorine, Oxygen and Nitrogen) of one molecule interacts with the <em>partial -ive</em> most electronegative atom of another molecule. These interactions are considered the strongest intermolecular interactions and are responsible for many stronger physical properties of water like, boiling point, viscosity, solubility e.t.c.

                       Attached figure shows the hydrogen bond interactions (green dashed lines) between water molecules. The partial charges are shown in red color.

4 0
3 years ago
Other questions:
  • Calculate the number of atoms in 4.8 dm^3 of neon gas at rtp
    14·1 answer
  • The electrons of an atom are (2 points)
    14·2 answers
  • What is the oxidation of Fe in Fe2O3
    15·1 answer
  • A student measures the mass of an object and obtains three values: 21.57 g,
    5·1 answer
  • Determine a massa de um átomo de carbono12 em gramas
    6·2 answers
  • State 2 postulates of kinetic theory of gases of 45 of 450
    8·1 answer
  • 1. Addition of which of the following will increase the solubility of CaCO3 in water? Consider the equilibrium process:
    6·1 answer
  • Why are there different theories about the effects of global warming? a. There is no data to support global warming. b. Global c
    14·1 answer
  • What type of chemical reaction is taking place?
    15·1 answer
  • Read everything and do everything for brainliest!
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!