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
padilas [110]
2 years ago
5

A) explain why caesium is more reactive than potassium.

Chemistry
1 answer:
Kamila [148]2 years ago
7 0

Answer:

Explanation:

(a) Firstly, caesium abd potassium are both in Group 1 of the periodic table. Group 1 metals (also called alkali metals) are the most reactive metals of the periodic table. Caesium is more reactive than Potassium because it has a higher electropositivity than Potassium. Electropositivity is the tendency of a metal to donate electron(s) to form a cation. Electropositivity increases down the group; this is because it is easier for atoms to loose electrons on the outermost shell that are far away from the central nucleus as against atoms whose outermost electrons are closer to the central nucleus. <u>Thus, the more "bulky" an atom is, the farther it's outermost electrons (valence electrons) get from the central nucleus and the easier it is to lose the outermost electron(s). And the easier it is for the valence electron(s) to be removed, the more reactive the atom would be and vice-versa.</u>

Caesium is more reactive than potassium because it is more bulky than potassium, with an atomic number of 55, while potassium has an atomic number of 19.  

NOTE: The closer an electron is to the nucleus, the more difficult it is to be removed from it's shell.

(b) i. Formula for Caesium Nitrate:

Symbol for Caesium is Cs and Nitrate is NO₃⁻.

Cs⁺ + NO₃⁻  ↔  CsNO₃

Formula for Caesium Nitrate is  CsNO₃

ii. Formula for Caesium sulphate

Symbol for caesium is Cs and Sulphate is SO₄²⁻

Cs⁺ + SO₄²⁻  ↔   Cs₂SO₄  

Formula for Caesium sulphate is Cs₂SO₄

NOTE: When writing the formulae, the charges would be exchanged to form the subscript as seen on the product sides above.

You might be interested in
An average microwave uses a frequency of 2.54 GHz. How much energy is emitted?
romanna [79]

Answer:

0.120 m

Explanation:

What you need to know here is that frequency and wavelength have an inverse relationship as described by the equation

mark me as Brainliest

4 0
3 years ago
What is the mass of 8.87 x 10^24 atoms of carbon?<br><br> PLEASE HELP!!
stiks02 [169]

Answer: 177g

Explanation:

Aw 12 = 6.02214076*10^23 atoms

mass = 12*88.70^23/6.022*10^23

4 0
3 years ago
Suppose a piece of silver jewelry contains 5.23×1022 atoms of silver (ag). part a how many dozens of silver atoms are in the pie
IgorC [24]
Answer:
number of dozens = 4.35834 * 10^21 dozens

Explanation:
A dozen contains 12 atoms. To know the number of dozens containing
5.23 * 10^22 atoms, all we have to do is cross multiplication as follows:
1 dozen ...........> 12 atoms
?? dozens ......> <span>5.23 * 10^22 
number of dozens = (</span><span>5.23 * 10^22 *1) / (12)
number of dozens = 4.35834 * 10^21 dozens

Hope this helps :)</span>
7 0
3 years ago
Answer that pls will give brainlist
ELEN [110]

Answer:

1. went on the first manned launch during the Apollo mission

2. responsible for all spacecraft systems

3. 4500 hour

4. published All-American Boys

5. Joined back in space organization as a consultant to inspire next generation for mars

4 0
3 years ago
a scuba diver's tank contains 0.29g of oxygen compressed into volume of 2.3L. What is the pressure in the tank at 9C?
viva [34]

Answer:

The answer to your question is P = 0.18 atm

Explanation:

Data

mass of O₂ = 0.29 g

Volume = 2.3 l

Pressure = ?

Temperature = 9°C

constant of ideal gases = 0.082 atm l/mol°K

Process

1.- Convert the mass of O₂ to moles

                16 g of O₂ -------------------- 1 mol

                0.29 g of O₂ ----------------   x

                    x = (0.29 x 1)/16

                    x = 0.29/16

                    x = 0.018 moles

2.- Convert the temperature to °K

Temperature = 9 + 273 = 282°K

3.- Use the ideal gas law ro find the answer

              PV = nRT

-Solve for P

              P = nRT/V

-Substitution

              P = (0.018 x 0.082 x 282) / 2.3

-Simplification

              P = 0.416/2.3

-Result

               P = 0.18 atm

5 0
3 years ago
Other questions:
  • If an object is thrown 60 m into the air and it takes the object 6 s to get there, what's the average speed of the object?
    13·2 answers
  • What is the weight of a 30.0 kg object?<br> 3.0 N<br> 300 N<br> 6.8 N<br> 132 N
    10·2 answers
  • Calculate wavelength in metres and nanometers of green light whose frequency is 5.7 x 10^14 Hz.
    5·1 answer
  • Atomic number, Mass Number, Number,<br> of neutrons, Number of Electrons, of 22Na+1​
    5·1 answer
  • Which of the following statements best represents a comparison of the two motions shown on the graphe
    7·1 answer
  • A balloon contains 3.20 L of helium. The pressure is reduced to 59.0 kPa, and the
    13·1 answer
  • What is the empirical formula of vitamin A ( C=83.85, H=10.56, O=5.58)<br>​
    11·1 answer
  • The provided balanced equation applies to the reaction that takes place between lithium hydroxide and sulfuric acid. 2LIOH + H,S
    14·1 answer
  • 2.
    11·2 answers
  • Use the chemical equation and the bond diagram to answer the question.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!