Question

. Which of the following statements is/are incorrect?
a) One atomic mass unit is a mass exactly aqual to one – twelth the mass of one carbon -12 atom
b) ‘amu’ has been replaced by ‘u’ which is known as unit mass
c) The formula such as NaCl is used to calculate the molecular mass
d) Both (b) and (c)

Answer 1

Answer:

a

Explanation:

one atmoic mass units

Answer 2

Answer:

(D)

Explanation:

Your answer is option d

Please mark me as brainlist