Using only the periodic table, write the symbol of the ion most typically formed by each of thefollowing elements:
a. K
d. Ci
b. Ca
c. S e. Ba f. Br
Answers
Answer:
The ion is written in the attached file
Explanation:
Final answer:
The most typical ions formed by K, Ca, and S are K+, Ca2+, and S2-, respectively.
Explanation:
The symbol of the ion most typically formed by each of the elements can be determined by looking at their positions on the periodic table and considering their electron configuration.
- K (Potassium): The most typical ion formed by potassium is K+ (Potassium ion). Potassium has one valence electron in its outermost shell, and it tends to lose this electron to form a stable ion.
- Ca (Calcium): The most typical ion formed by calcium is Ca2+ (Calcium ion). Calcium has two valence electrons in its outermost shell, and it tends to lose these electrons to achieve stability.
- S (Sulfur): The most typical ion formed by sulfur is S2- (Sulfide ion). Sulfur has six valence electrons in its outermost shell, and it tends to gain two electrons to achieve stability.
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Answers
Answer:
The number of protons of the Pb is 82.
The number of electrons of the Pb²⁺ is 80.
Explanation:
Each chemical element is characterized by the number of protons in its nucleus, which is called the atomic number Z.
The atomic number is used to classify the elements within the periodic table of the elements. In it, you can read in the upper left. In this case, the lead Pb has an atomic number of 82. This indicates that the number of protons of the Pb²⁺ is 82.
In every electrically neutral atom the number of protons in the nucleus is equal to the number of electrons in their orbitals. But in this case it is a cation, that is, it is a positively charged ion. A cation is formed when electrons are lost (which have a negative charge), thus acquiring the positive charge ion. In this case then, Pb²⁺ indicates that the cation has a +2 charge. So this means that 2 electrons have been lost. So, if it were electrically neutral, the lead Pb would have 82 electrons, but with the loss of two of its electrons, the number of electrons of the Pb²⁺ is 80.
There are 82 protons and 80 electrons in one Pb²⁺ ion. Lead (Pb) has an atomic number of 82.
The atomic number of an element represents the number of protons in its nucleus. Since lead (Pb) has an atomic number of 82, it means that a neutral lead atom has 82 protons.
When the Pb²⁺ ion is formed, it means that the atom has lost two electrons. The +2 charge indicates that the atom now has two more protons than electrons. Since electrons have a negative charge, losing two of them results in a net positive charge on the ion.
Since a neutral lead atom has 82 electrons, subtracting two electrons from it gives us 80 electrons in the Pb²⁺ ion. However, the number of protons remains the same at 82. The loss of electrons creates a positive charge, and the number of protons determines the element's identity.
In summary, the Pb²⁺ ion has 82 protons and 80 electrons. The 2+ charge indicates the loss of two electrons, resulting in a net positive charge on the ion.
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Answers
Kinetic Energy of particle of mass, m moving with velocity, v is
K.E. = ½mv²
m= 1500 kg
v = 10 m/s
((1/2)*1500)*
750*10=75000
KE=75 joules
How can you figure out kinetic energy?
According to classical physics, kinetic energy (KE) is determined by multiplying an object's mass by its velocity squared, or half of the mass (1/2*m). The kinetic energy of an object with a mass of 10 kilograms (m = 10 kg) travelling at a speed of 5 m/s (v = 5 m/s) is equal to 125 joules, or (1/2 * 10 kg) * 5 m/s2.
a vehicle with a mass of 1200 kg and a speed of 20 m/s. KE = ½mv 2
KE = ½ x 1200 x (400) = 240,000 J 2.
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Hello!
If The 1500 kg car will increase its velocity to 10 m/s. What Will be its kinetic energy ?
We have the following data:
m (mass) = 1500 kg
v (velocity) = 10 m/s
KE (kinetic Energy) = ? (in Joule)
Formula to calculate kinetic energy:
Solving:
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beta emission
alpha emission
fission
Answers
Answer: A: fusion
Ex:
B. Energy
C. Fireworks
D. Chemical Reaction
Answers
Answers
The solid particles inside the air freshener undergo sublimation and becomes gas. This gas is spraying out and thus the mass and volume inside reduces.
What is sublimation?
Sublimation is the process of conversion of solid particles into gas phase and vice-versa. The particles in solid phase are closely packed and they cant move apart.
Particles in gaseous are free to move and spread in the atmosphere. To weaken the intermolecular force in the solid particles to convert them to gas, energy need to be applied.
Particles inside the freshener container gains enough energy to directly form their gas phase. This gas can easily move out as spray and the sprayed mass is lost from the solid.
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O A.) Force = Mass x Acceleration
OB.) Mass = Force x Acceleration
OC.) Acceleration = Mass x Force
D.) none of the above
Answers
Explanation:
A. Force = Mass x Acceleration