Lithium, sodium and potassium is a Doberenier traid. The atomic masses of Li and K are 7 and 39 respectively. What is the expected atomic mass of Na?

A,B and C constitute the doberiner's traid. Atomic mass of a and c are 7 and 23 respectively' calculate atomic mas of B.

What is atomic mass unit?

A radioactive nucleus undergoes a series of decays according to the sequence, A overset (beta) rarr A_1 overset (alpha) rarr A_2 overset (alpha) rarr A_3 If the mass number and atomic number of A_3 are 172 and 69 respectively,what is the mass number and atomic number of A?

What is the mass of one atom of C(atomic mass 14)

The edge length of NaCl unit cell is 564 pm. What is the density of NaCl ? The atomic mass of Na and Cl are 23 and 35.5 respectively. NaCL has fcc structure.

B has two isotopes 10B (19%) and 11B( 81%) . What is the atomic mass of B .

Sodium and aluminium have atomic numbers of 11 and 13 respectively they are separated by one element in the periodic table and have valencies of 1 and 3 respectively. chlorine and potassium are also separated by one element in the periodic table(their atomic numbers are 17 and 19 respectively) and yet both have valency of one. explain your answer

The radioactive isotope D decays according to the sequences Doverset(beta-)rarrD_1 overset(alpha-particli)rarrD_2 If the mass number and atomic number of D_2 are 176 and 71 respectively, what is atomic number of D?

There are three elements X,Y,Z atomic masses of X and Z are 35.5 and 127. what will be atomic mass of Y on the basis of dobereiner's traids?