The correct pair of compounds that are isomers is CH₃COCH₃ and CH₃CH₂CHO and the correct option is option 4.
Isomers are compounds that have the same molecular formula but different structural arrangements or connectivity of atoms.
Among the given options, the pair of compounds that are isomers is CH₃COCH₃ (acetone) and CH₃CH₃CHO (propanal). Both compounds have the molecular formula C₃H₆O, but they differ in their structural arrangement.
Acetone is a ketone, with a carbonyl group located in the middle of the carbon chain, while propanal is an aldehyde, with the carbonyl group located at the end of the carbon chain.
These structural differences result in distinct chemical properties and reactivities of the compounds.
Thus, the ideal selection is option 4.
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b. sodium
c. pure water
d. carbon monoxide
Among the given ones, sodium is not a compound. The correct option is b.
The substance that is formed by union of different elements is referred to as a compound.
For instance, salt is made up of sodium and chloride, water have hydrogen and oxygen, etc.
Thus, the correct option is b.
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B. He, H, Al
C. He, Ne, Ar
D. Na, Ca, Al
Set of elements which has similar properties is helium,neon,argon.
Elements in the periodic table are arranged according to their atomic numbers according to modern periodic law which states that properties of elements are a periodic function of their atomic numbers.
In a group, elements have same number of valence electrons as for every element in a group a new shell is added and hence number of valence electrons remain same. In a period, electrons are added to same shell for every element present in the same period,because of which valence electrons do not remain same.
Valence electrons take part in chemical reactions and as they are same for elements present in the same group they have similar properties while for elements present in a period since they have different number of valence electrons they differ in properties.
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Answer:
The correct answer is option A) Oxidation
The release of energy through the removal of hydrogen from a molecule is referred to as oxidation. In this process, energy is often released which can be utilized by cells for different functions.
The release of energy from a molecule by the removal of hydrogen is known as A) Oxidation. In biochemical reactions, oxidation refers to the process in which electrons are removed from a molecule, usually by removing a hydrogen atom (which consists of one proton and one electron). This process often releases energy that can be used by cells for various functions. Thus, through oxidation, molecules such as carbohydrates or fats can be broken down to release energy used for cellular activities.
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b. atomic number = 8; mass number = 17
c. atomic number = 7; mass number = 17
d. atomic number = 7; mass number = 15
c. Atomic number = 7; mass number = 17
The atomic number of the first isotope is 7.
Isotopes of the same element have the same atomic number, so the atomic number of the second isotope must also be 7.
Mass number = no. of protons + no. of neutrons, or
A = p + n
∴ A = 7 + 10 = 17
Options “a.” and “b.” have the wrong atomic numbers, and option “d.” has the wrong mass number.
Answer:
C
Explanation:
gas ➡ solid
gas ➡ liquid
solid ➡ gas
Answer: solid ➡ gas
Explanation:
Solid state : In this state, the molecules are arranged in regular and repeating pattern. The molecules are closely packed that means they are fixed and vibrate in place but they can not move from one place to another. and thus have least kinetic energy.
For example : Copper
Liquid state : In this state, the molecules are present in random and irregular pattern. The molecules are closely packed but they can move from one place to another.. they have intermediate kinetic energy between solids and gases.
For example : water
Gaseous state : In this state, the molecules are present in irregular pattern. The molecules are not closely packed and they can move freely from one place to another and spread out. They have highest kinetic energy.
For example : Helium gas
Iron-53 is a radioactive isotope of iron. It undergoes radioactive decay in order to become more stable. The process of radioactive decay involves the emission of particles or radiation from an unstable nucleus, resulting in a more stable form of the original element.
When iron-53 undergoes radioactive decay, it is transformed into an isotope of manganese. Specifically, it decays into manganese-53, which is a stable isotope of manganese.
This process of decay is known as beta decay, and it involves the emission of an electron (a beta particle) and a neutrino from the nucleus of the iron-53 atom. This causes the iron-53 atom to become a manganese-53 atom, which is more stable than the original iron-53 atom.
The process of radioactive decay is an important part of the natural decay of elements. It is a natural process that occurs in nature and is not caused by human activity.
Radioactive decay is responsible for the formation of many elements in nature, and it is also responsible for the formation of many of the elements that are used in everyday life.
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