Atomic number is the amount of protons and electrons in an element. The number of neutrons can change, but not to the point of extent so that it is extremely unstable. If an isotope of an element does not have the same atomic number of that element, then it's not the element is it? Ex: Carbon's atomic number is 6. It has 6 protons in all of its. Neutrons are all identical to each other, just as protons are. Atoms of a particular element must have the same number of protons but can have different numbers of neutrons. When an element has different variants that, while all having the same number of protons, have differing numbers of neutrons, these variants are called isotopes. Dalton hypothesized that atoms are indivisible and that all atoms of an element are identical. It is now known that. All of Dalton's hypotheses are correct c. Atoms are divisible b. Atoms of an element can have different numbers of protons d. All atoms of an element are not identical but they must all have the same mass. Mosley discovered that all atoms of an element have the same number of neutrons in there nuclei False-atomic mass The average mass of an elements atoms is called the atomic number. It has 26 atoms. Because Barium has 6 atoms and phosphorus has 4 and oxygen has 16 all in all it has 26 atoms. Are all atoms the same? Isotopes are atoms of the same element with varying number.
All atoms of the same element must have the same number of protons.Explanation;Atoms are the smallest particles of elements that can take part in a chemical reaction. Atoms are made of sub-atomic particles, namely; electrons found in the energy levels, protons and neutrons which are both found in the nucleus of an atom.Atoms of the same may have different neutrons, forming isotopes, which are atoms of the same element with the same number of protons but different number of neutrons.Atom may also form ions which will have the same number of protons but different number of electrons as the original atom.Therefore, atoms of the same element will always have the same number of protons or atomic number.
All atoms of the same element must have the same number of protons.
As we know that any atom is represented as
here we have
z = atomic number = number of protons
A = mass number = number of neutron + number of protons
Now if we have atoms of same element then we can say that its atomic number will remain same
This shows that number of protons will not change in that case
So here correct answer will be
Option (b) is the correct answer.
When two atoms of the same element has different number of neutrons but same number of protons then it is known as an isotope.
For example, isotopes of carbon are and .
Also, when two atoms of the same element have same number of protons then their chemical properties remain the same.
Therefore, we can conclude that two atoms of the same element must have the same number of protons.
Explanation: The number of protons corresponds to the atomic number.
The correct answer is protons.
An ion is formed when an atom looses or gains electron.When an atom looses electrons, it will form a positive ion known as cation.When an atom gains electrons, it will form a negative ion known as anion.
Atomic number is defined as the number of protons that are present in an atom. It is represented by the symbol 'Z'.
Atomic number = number of protons
Mass number is defined as the sum of number of protons and neutrons that are present in an atom. It is represented by the symbol 'A'.
Mass number = Number of protons + Number of neutron
Each and every element has a unique number known as atomic number and atomic number is number is identified by the number of protons that are present in an atom.
All atoms of the same element has same number of protons. For Example: All atoms of sodium will have 11 number of protons.
Hence, the correct answer is protons.
Atomic number is defined as the total number of protons present in an element.
Each element of the periodic table has different atomic number because each of them have different number of protons.
For example, atomic number of Na is 11, and atomic number of Ca is 20.
On the other hand, atomic mass is the sum of total number of protons and neutrons present in an atom.
For example, atomic mass of nitrogen is 14 that is, it contains 7 protons and 7 neutrons.
Thus, we can conclude that all atoms of the same element must have the same number of protons.
A compound is defined as the substance which is formed from the combination of two or more elements in a fixed ratio. They show different properties than the element from which they are formed from. For Example: shows different properties than carbon and oxygen atoms.
Hence, the correct statement is entirely new properties than the elements that composes it.For 5:
Compounds are formed when two or more atoms of different elements combine chemically. So, the compounds can be separated by any chemical means only.
Hence, the correct answer is chemical means.For 6:
Atomic number for an element is defined as the number of protons or number of electrons.
Electrons cannot be used to characterize an element.
Atoms that have same number of protons belong to same element and atoms which have different number of protons belong to different element.
Thus, the correct answer is protons.For 7:
An ionic bond is formed when complete transfer of electrons takes place from one atom to another. An atom which donates electrons is considered as an electronegative atom and the one which accepts electrons is considered as an electropositive element.
The compound formed is an ionic compound. This compound is usually formed when a metal combines with a non-metal.
A covalent bond is formed when sharing of electrons takes place between two atoms combining. This compound is formed when two non-metals combine.
Hence, the correct answer is ionic compound.For 8:
For a given compound FeS. The chemical name for this compound is ferrous sulfide.
This compound is formed from the combination of iron and sulfur. Iron belongs to Group 8 and is considered as a metal. Sulfur belongs to Group 16 and is considered as a non-metal.
These two atoms will combine to form an ionic compound.
Thus, the correct answer is ionic compound.For 9:
Weight is defined as the amount of gravitational pull that acts on an object having mass 'm'. It is expressed by an equation:
W = weight
m = mass of the object
g = acceleration due to gravity
An object will have same mass on every planet but will have different weight due to the change in strength of gravity.
Hence, the correct answer is Weight.For 10:
Which Of The Following Is An Acid
Calcium is the 20th element of the periodic table. The number of electrons this element has are 20.
The electronic configuration for this element =
Number of electrons that are present in third energy level (n = 3) for this element are 8.
Hence, the correct answer is 8.
Explanation: I LOOKED IT UP
Are All Atoms The Same
Atoms In An Element