x,y and z are the elements of a Dobereiner 's tried .If the atomic mass of `'x' ` is 7 and that of 'z' in 39. what should be the atomic mass of the 'y' ?

What is atomic mass of an element?

10^(20) atoms of an element has a mass of 4 mg. What is the atomic mass of the element?

Atomic mass of the element Sulphur-

3 elements x , Y and Z form a Dobereiner triad . Their atomic weights are in the ratio 5 : 11 : 17 . If the sum of the atomic weights of extreme elements is 176 , then find the atomic weights of X , Y and z .

Find the angle between the planes 2x - y + z = 6 and x + y + 2 z = 7 .

The mass of 1.5xx10^(20) atoms of an element is 15mg. The atomic mass of the element is

The atomic number (Z) of an element is 6. name the element.

A compound is formed by elements of X, Y and Z . Atoms of Z (anions) fcc lattice. Atoms of X (cations) occupy all the octahedral voids. Atoms of Y (cations) occupy (1)/(3)rd of the tetrahedral voids. The formula of the compound is

Elements X, Y and Z have atomic numbers 19, 37 and 55 respectively. Which of the following statements is true about them?