Question

Assertion :According to Mendeleev, periodic properties of elements are the function of their atomic masses.

Reason : Atomic number is equal to the number of protons.

a)Both assertion and reason are true and reason is the correct explanation of assertion.
b)Both assertion and reason are true but reason is not the correct explanation of assertion.
c)Assertion is true but reason is false. d)Assertion is false but reason is true. ​

Answer 1

Answer:

Acceleration is the rate of change of velocity. Usually, acceleration means the speed is changing, but not always. When an object moves in a circular path at a constant speed, it is still accelerating, because the direction of its velocity is changing.

Answer 2

Answer:

d)Assertion is false but reason is true.

Explanation:

Atomic number i.e. number of protons of two atoms of different elements cannot be same, which is why atomic number is more significant than the atomic mass of a element.

HOPE IT HELPS.