Question

Q-3) TRUE OR FALSE
9) Isotopes of an element have different number of neutrons.
10) Number of valence electrons in Clion are 8
11) The mass of an object is constant every where in the universe​

Answer 1

Answer:

have a great day...

Explanation:

Answer 2

Answer:

1. True

2.True

3. False

Explanation:

Good night