SSC
CHEMISTRY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
Group of elements whose ending e-configuration is p5. 7 electrons in outer level, easily gain electrons.
|
|
Noble gases
|
|
|
Halogens
|
|
|
Chalcogens
|
|
|
Nitrogen Group
|
Explanation:
Detailed explanation-1: -For stability, the atom needs to have a full outer shell. Group 7 elements need to gain 1 electron to have a full shell.
Detailed explanation-2: -The Group 7A elements have seven valence electrons in their highest-energy orbitals (ns2np5).
Detailed explanation-3: -Atoms of Group 17, the halogens, have 7 valence electrons. A gain of one or more electrons gives these atoms a stable 8 electrons, so the halogens react easily with other elements.
There is 1 question to complete.