Question

Question 1

Calculate the oxidation state of the following:

i) N in NO2

ii) F in CaF2

iii) O in K2O

iv) N in NO


Question 2

Calculate the molecular mass of the following:

i) NaHCO3

ii) MgSO4

iii) Ca(OH)2

iv) NaCl​

Answer 1

Answer:

i ans 2 ,ii -1 iii -1 iv 2

23+1+12+48= 36 + 48 = 84

24 + 32+64 = 56+64= 120

40+34= 74

23.5 +35.5 = 59.0