Isotopes are atoms of same element, having same atomic number but different atomic mass due to varied number of neutrons.

You are watching: Which pair below describes isotopes of the same element?

Only option B atom has same number of protons and different neutrons.



1.Type of bonding in which electrons are completely transferred is called ionic bond.2. Isotopes have same atomic number but different atomic mass number.Atomic number = number of protons + number of neutronsTherefore, A is correct. 3. Nucleus is composed of neutrons and protons.4. Chemical reactions follows the law of conservation of mass. Therefore mass of reactant = mass of product = 4 grams.5. Again, mass of table salt formed should be equal to mass of (Na+Cl₂) = 4 grams.

B)an atom with 6 protons and 6 neutrons - an atom with 6 protons and 7 neutrons

Explanation:

Isotopes are elements which have same atomic number but different mass number.

Mass number is defined as the sum of number of protons and neutrons that are present in an atom.

Mass number = Number of protons + Number of neutrons

Atomic number is defined as the number of protons or number of electrons that are present in an atom.

Atomic number = Number of electrons = Number of protons

Thus isotopes of same element must have same number of protons and different number of neutrons.

The only combination that fulfil this criteria is : an atom with 6 protons and 6 neutrons - an atom with 6 protons and 7 neutrons



Answer from: abiii7460

B

Explanation:

For exhibit isotopy, atoms of the element must have the same proton number (atomic number) but different mass number.

In Option B

The two atoms have same atomic number (6) but different mass number (12 and 13 respectively).

Mass num = proton number + Neutron number

Unlike the other options.



Answer from: babra

The atom with 6 protons and 6 neutrons and an atom with 6 protons and 7 neutrons are the isotopes of same element.

Explanation:

Isotopes are defined as the chemical species that belong to the same element but differ in their mass number.

This also means that the chemical species have same number of protons and electrons but different number of neutrons.

Atomic number is defined as the number of protons or electrons that are present in a neutral atom.

Atomic number = number of protons = number of electrons

Mass number is defined as the sum of number of protons and neutrons that are present in an atom.

Mass number = Number of protons + Number of neutrons

From the given options:

The elements having same number of protons will be the isotopes of same element.

Hence, the atom with 6 protons and 6 neutrons and an atom with 6 protons and 7 neutrons are the isotopes of same element.



Answer from: dude5522

The correct answer is Option B.

Explanation:

Isotope is defined as the chemical specie which belong to the same element but differ in their molecular mass.

The isotopes have same atomic mass but differ in their mass numbers

Atomic number is defined as the number of protons or electrons that are present in a neutral atom.

Atomic number = number of protons = number of electrons

Mass number is defined as the sum of number of protons and neutrons that are present in an atom.

Mass number = Number of protons + Number of neutrons

Thus, isotopes of an element has same number of protons but they differ in the number of neutrons.

For Example: Chlorine has 2 isotopes,

*

In
*
isotope:

Number of protons = 17

Number of neutrons = 35 - 17 = 18

In
*
isotope:

Number of protons = 17

Number of neutrons = 37 - 17 = 20

Hence, the correct answer is Option B.


Answer from: makayladishon

An isotope is an atom with a different number of neutrons than another atom of the same element. Since atoms of the same element all have the same number of protons, choice B(6pro &6neu vs. 6pro&7neu) is an example of isotopes


Answer from: BaileyElizabethRay

B

Explanation:

i just took the test and got it correct :)


Answer from: sandy2597

The answer to #5 is 4 grams.


Answer from: hannah1699
An isotope is an atom with a different number of neutrons than another atom of the same element. Since atoms of the same element all have the same number of protons, choice B(6pro &6neu vs. 6pro&7neu) is an example of isotopes

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