Question

X is placed in 14th group and 5th Period
Its outermost configuration is :-
(1) 5s 5p
(2) 5s4d" 5p?
(3) 4f12 5d 69
(4) 4d 5s!​

Answer 1

Answer:

5s2. 5p2. 4d10

Explanation:

according to energy -4d10. <5s2. <5p2

Answer 2

Its outermost configuration is $5s^25p^2$.

• The element X is placed in the 14th group and 5th period which means it is a member of the carbon family.
• The element X is Tin or Sn.
• Sn has an atomic number 50.
• Its electronic configuration is as follows-
• $1s^22s^22p^63s^23p^64s^23d^{10}4p^65s^24d^{10}5p^2$
• Thus its outermost electronic configuration is $5s^25p^2$.
• Hence the correct option is 1.