Isodiapheres are the atoms of two elements having same value of:

Q. Isodiaphers are the atoms of two elements having same values of:

Q. Isodiaphers are atoms having :

Q. Assertion :An atom on losing an $\alpha$-particle forms its isodiapher. Reason: Isodiaphers are the elements having same difference in their neutrons and protons.

Q. An element is represented by ${}_Z{X}^A$, where Z is atomic number which is also equal to number of proton, A is mass number and X is symbol of the element.
Mass number (A) = Number of protons (Z) + Number of neutrons.
Isoelectronic: Species/ elements having same number of electron
Isodiaphers: Elements having same value of $|(A-2Z)|$
Isotopes: Atoms having same number of proton

Which of the following is a pair of isodiaphers?

Q. An element is represented by ${}_Z{X}^A$, where Z is atomic number which is also equal to number of proton, A is mass number and X is symbol of the element.
Mass number (A) = Number of protons (Z) + Number of neutrons.
Isoelectronic: Species/ elements having same number of electron
Isodiaphers: Elements having same value of $|(A-2Z)|$
Isotopes: Atoms having same number of proton

Which of the following is a pair of isodiaphers?