SSC MTS EXAM

SSC

CHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
CI
A
chlorine g.17 p.5
B
chlorine g.3 p.17
C
chlorine g.17 p3
D
None of the above
Explanation: 

Detailed explanation-1: -The neutral atom chlorine (Z=17), for instance has 17 electrons. Therefore, its ground state electronic configuration can be written as 1s22s22p63s23p5. The chloride ion (Cl-), on the other hand, has an additional electron for a total of 18 electrons.

Detailed explanation-2: -Chlorine has the electron configuration [Ne]3s23p5, with the seven electrons in the third and outermost shell acting as its valence electrons.

Detailed explanation-3: -The atomic number of chlorine atom = 17. So, its electronic configuration is. K L M. 2 8 7.

There is 1 question to complete.