Which of the following statements is true about isotopes? question options: the number of protons always equals the number of neutrons in all isotopes. different isotopes for the same element always have the same number of protons. the number of protons never equals the number of neutrons in an isotope. different isotopes for the same element will always have the same numbers of neutrons.

i)The number of protons always equals the number of neutrons in all isotopes.

FALSE

Number of protons and number of neutrons may or may not be same in isotopes as these are the type of same atoms with different mass number and same atomic number

ii) Different isotopes for the same element always have the same number of protons.

TRUE

All isotopes are of same atom so they must have same number of protons in it so these are of same atomic number.

iii) The number of protons never equals the number of neutrons in an isotope.

FALSE

The number of neutrons and protons may be equal in two isotopes of same atom

iv) Different isotopes for the same element will always have the same numbers of neutrons.

FALSE

Number of neutrons must be different in isotopes of same atoms because they are different due to their neutrons

luster is not a good characteristic to use by itself because luster is the property of minerals that indicates how much the surface of a mineral reflects light. the luster of a mineral is affected by the brilliance of the light used to observe the mineral surface.

the order for strong to weak forces such as

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force

the fundamental forces are those forces that act between to objects or element to make interactions. there are four types of fundamental forces such as strong and weak nuclear forces (due to protons and electrons), electromagnetic force (due to the motion of electrons) and gravitational force (due to orbital movement of the planet). if these forces are arranged on the basis of their maximum strength then the order is

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force