elements X Y and Z have atomic number 6 9 and 12 respectively which one
a) forms an anion
b) forms a cation
c) has four electrons in its valence shell
Answers
Explanation:
a.Element Y form anion by gaining 1 electron
b.Element Z can from cation by losing electron
c.element X have 4 electrons in its valence shell
as its electronic configuration of X is 1s^2 2s^2 2p^2
Answer:
Atomic number with 9 forms anion .
Atomic number with 12 forms cation .
Atomic number with 6 has four electrons in it's valence shell .
Explanation:
a) Flourine is the element with atomic number 9 .
It's electronic configuration is 1s2 2s2 2p5.
It requires one more electron to attain stable configuration of 2p6. hence it exists as anion. F_ .
b) Magnesium is the element with atomic number 12. it's electronic configuration is 1s2 2s2 2p6 3s2 . if it looses 2 electrons then it will attain stable configuration of neon. so it exists as cation mg+2.
c) carbon is the element with atomic number 6 . it's electronic configuration is 1s2 2s2 2p2 . it has four valence electrons . if it looses four electrons it can attain stable configuration of helium . if it gains four electrons it can attain stable configuration of neon.