The equivalent weight of a metal is 4.5 and the molecular weight of its chloride is 80. The atomic weight of the metal is

Options

A. 18
B. 9
C. 4.5
D. 36

Answer

B

Explanation

Let metal chloride is `MCI_x`(Suppose metal is x valent), then molecular weight of `MCI_x = `Equivalent weight of metal `xx x + x xx 35.5 = 80 `
` 4.5 x + 35.5 x= 80 implies therefore x=2`
` therefore ` Atomic weight of metal `= 4.5 xx 2 = 9`