Question

B. () The following is a list of the electronic distributions of atoms of unknown elements.
Element Electronic distribution
A.
2,5
B
2,8,4
с
2, 8, 8,2
D
2, 8, 18,8
E
2, 8, 18, 8, 1
2, 8, 18, 18,7
Choose an element from the list for each of the following descriptions.
(a) It is a noble gas.
(6) It is a soft metal with a low density.
(c) It has a giant covalent structure similar to diamond.
(d) It can form a negative ion of the type XS
(*) How does electronic configurations of atoms change in a period with increase in atomic
number?
F​

Answer 1

Answer:

(a)

nobel gas ..

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