Question

1. State whether the following are true or false.
a. The mass of a neutron is less than the mass of an electron.
b. Same type of atoms combine to form molecules of elements,
c. Phosphorous is a polyatomic molecule.
d. Lead has only one valency.
e. All elements have only one valency.​

Answer 1

a is false

b is true

c is true

d I don't know

e is false