Answer:
2p
Explanation:
Boron is a member of group 13. The highest energy sub-level is usually found on the outermost shell of the atom of the element involved.
For a group 13 element, its outermost shell configuration is ns2 np1. The electronic configuration for boron is; 1s2 2s2 2p1.
Hence the highest energy sub-level in boron is 2p.
Ionisation enthalpy across the group (increase or decrease)
Give reasons??
Answer:
As we move from left to right across a period, the ionization energy of elements increases. This is due to the decrease in the size of atoms across a period.
Answer:
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Ionization enthalpy (IE) is the energy required to remove the highest-energy electron from a neutral atom. In general, ionization energy increases across a period and decreases down a group.So, for your question ⇻ IE decreases down the group.____________________
ʰᵒᵖᵉ ⁱᵗ ʰᵉˡᵖˢ
# ꧁❣ RainbowSalt2²2² ࿐
In order to determine the magnetic properties of phosphorus atom we need to find out the number of unpaired electrons present in the ground state of phosphorus atom! Select one of the answers below that represents this number.
Group of answer choices
1
4
3
0
2
Answer:
Think of it this way If you have a phosphorus atom whats its oposites once you found that out you may be able to find the answer
Explanation:
Hope this helps :)
When you draw a bow'across a violin string, which kind of wave is created in
the air surrounding the string?
A. surface
B. electromagnetic
C. longitudinal
D. Transverse
Answer:
C
Explanation:
Answer: C. Longitudinal
Explanation: A P 3 X
What's the partial pressure of hydrogen in a gas mixture if its mole fraction is 0.1 and the total pressure is 325 torr?
Question 15 options:
325 torr
32.5 torr
100 torr
65 torr
Explain the difference between a mixture of two substances and a chemical compound formed by them
Answer:
mixtures are physically combined structures that are separated into their original components. A chemical substance is composed of one type of atom or molecule. A mixture is composed of different types of atoms or molecules that are not chemically bonded.
Explain:
yw
ask your mom and your family
1. Write formulas for the binary ionic compounds formed between
the following elements:
a. potassium and iodine d. aluminum and sulfur
b. magnesium and chlorine e. aluminum and nitrogen
C. sodium and sulfur
The formulas for the binary ionic compounds are:
a. potassium and iodine: KI.b. magnesium and chlorine: MgCl₂.c. sodium and sulfur: Na₂S.d. aluminum and sulfur: Al₂S₃.e. aluminum and nitrogen: AlN.We want to write the formulas of different binary ionic compounds. to do so, we need to consider the octet's rule.
What is the octet's rule?The octet's rule establishes that atoms will lose, gain or share electrons to achieve the electron configuration of the nearest noble gas (8 valence electrons except for He with 2).
a. potassium and iodineK has 1 valence electron so it will lose 1 electron to form K⁺. I has 7 valence electrons so it will gain 1 electron to form I⁻. The neutral compound between K⁺ and I⁻ is KI.
b. magnesium and chlorine
Mg has 2 valence electrons so it will lose 2 electrons to form Mg⁺². Cl has 7 valence electrons so it will gain 1 electron to form Cl⁻. The neutral compound between Mg⁺²⁺ and Cl⁻ is MgCl₂.
c. sodium and sulfur
Na has 1 valence electron so it will lose 1 electron to form Na⁺. S has 6 valence electrons so it will gain 2 electrons to form S⁻². The neutral compound between Na⁺ and S⁻² is Na₂S.
d. aluminum and sulfurAl has 3 valence electrons so it will lose 3 electrons to form Al³⁺. S has 6 valence electrons so it will gain 2 electrons to form S⁻². The neutral compound between Al³⁺ and S⁻² is Al₂S₃.
e. aluminum and nitrogenAl has 3 valence electrons so it will lose 3 electrons to form Al³⁺. N has 5 valence electrons so it will gain 3 electrons to form N³⁻. The neutral compound between Al³⁺ and N³⁻ is AlN.
The formulas for the binary ionic compounds are:
a. potassium and iodine: KI.b. magnesium and chlorine: MgCl₂.c. sodium and sulfur: Na₂S.d. aluminum and sulfur: Al₂S₃.e. aluminum and nitrogen: AlN.Learn more about binary compounds here: https://brainly.com/question/7960132
i If a chemical system is at equilibrium, any change in the system will always result in an increase of which of the following?
1.The reaction that opposes the change
2. The concentration of the product
3. The concentration of the reactants
4. The temperature of the system
Answer:
1.The reaction that opposes the change
Explanation:
Consider the reaction;
A + B ⇄ C + D
If a constraint such as a change in temperature, pressure or volume is imposed on this chemical system in dynamic equilibrium, the equilibrium position will shift so as to annul the constraint.
This shift in the equilibrium position will favour either the forward or reverse reaction depending on the type of constraint imposed on the system.
Hence, If a chemical system is at equilibrium, any change in the system will always result in an increase of the reaction that opposes the change.
93 Points!!! Which of the following join together to form molecules?
Atoms
Organisms
Organs
Tissues
Answer:
Atoms
Explanation:
Atoms are the smallest thing meaning they form molecules which are made of atoms.
Also, your question is not 93 points but whatever lol.
Answer:
Atoms
Explanation:
I took the test
Si-4) AN= 14 AM= 28
e= n=
Answer:
have a good day
Explanation:
Muriatic acid is often used to remove rust. A solution of muriatic acid, HCl, reacts with Fe203 deposits on
industrial equipment. How many liters of 5.00 M HCl would be needed to react completely with 339 g
Fe203?
Answer:
2.54 L
Explanation:
Step 1: Write the balanced neutralization equation
6 HCl + Fe₂O₃ → 3 H₂O + 2 FeCl₃
Step 2: Calculate the moles corresponding to 339 g of Fe₂O₃
The molar mass of Fe₂O₃ is 159.69 g/mol.
339 g × 1 mol/159.69 g = 2.12 mol
Step 3: Calculate the moles of HCl that react with 2.12 moles of Fe₂O₃
The molar ratio of HCl to Fe₂O₃ is 6:1. The reacting moles of HCl are 6/1 × 2.12 mol = 12.7 mol
Step 4: Calculate the volume of HCl
12.7 moles are in 5.00 M (5.00 mol/L) HCl. The required volume is:
12.7 mol × 1 L/5.00 mol = 2.54 L
If I have 100 mL of oil in a container and 100 mL of water in another
conta in er Which container wouldhave more mass?
Answer:
The answer is 200mL each amount have the same mass
Explanation:
100mL +100ML= 200mL mass in each container
Answer:
200ml
Explanation:
1)
Steel Wool Experiment
Before
Observations
After
Observations
Appearance
Steel wool dark gray,
Balloon deflated
Appearance
Steel wool dark
brown; Balloon
inflated
Mass (9)
485.68
Mass (9)
The students data can be seen here. A chemical reaction clearly took
place in the flask. One entry is missing: the mass of the system at the
end of the experiment. What amount should be added to the data
table?
Answer:
Chemical reactions, chemistry, science as inquiry and data analysis. ... Students burn steel wool in both an open and closed environment to understand ... The difference in mass for this small sample of steel wool will be very small. ... careful attention to the balloon! 9. When rusting occurs the properties of the metal changes.
Explanation:
The chemical formula for sodium citrate is Na3C6H5O7. Which statement is true? Sodium citrate is a compound with a total of 21 atoms. Sodium citrate is an element with a total of 21 atoms. Sodium citrate is a compound with a total of 4 atoms. Sodium citrate is a compound with a total of 21 atoms, each of a different element.
Answer:
Sodium citrate is a compound with a total of 21 atoms
Which of the following statements is true?
Answer:
option first is right answer
What is biocapacity?
PLZZ HELP TY
Answer:
Explanation:
The biocapacity or biological capacity of an ecosystem is an estimate of its production of certain biological materials such as natural resources, and its absorption and filtering of other materials such as carbon dioxide from the atmosphere.