Question

using the mentalist periodic table answer the following:. a. write the formula of hydride and oxide of silicon b. name the elements in group 1 which do not resemble with alkali metals. c. in group 6 why does Te with atomic mass 127.6 comes before I with atomic mass 126.9.​

Answer 1

Answer:

$hello$

Formulate the equation:

Total money is X

Elder gets (2/5) of X = 2X/5

Middle one gets (1/3) of X = X/3

And the younger gets 120/-

So we have equation as follow:

Total money = sum of money got by every brother

X = (2X/5)+(X/3)+120

-120=(2X/5)+(X/3)-X

(2/5+1/3–1)X = -120

X = 450/-