Question

3) Two atoms have identical electron configurations. Which statement about the atoms
is true?
a) They have the same chemical properties.
b) They must have the same mass.
c) They must have the same number of neutrons.
d) They could be atoms of different elements in the same group.

Answer 1

Answer:

they have the same chemical properties

Explanation:

because chemical properties are the periodic function of atomic no. and atomic no. is the no. of electrons and the given atoms have equal electrons so they also have same atomic no.

Answer 2

a)They have the same chemical properties