Question

Which of the following statement(s) is incorrect?
(1) The electronic configuration of Cr is [Ar]3d 4s
(Atomic No. of Cr = 24)
(2) The magnetic quantum number may have a
negative value
(3) In silver atom, 23 electrons have a spin of one
type and 24 of the opposite type
(Atomic number of Ag = 47)
4) van der Waal radius of Cl is less than its
covalent radius​

Answer 1

Answer:

2 is the ans

Explanation:

as per the question

Answer 2

Answer:

chromium configuration

2,8,12,2