Question

If an element X has 10 neutrons and valence electrons= 8 in L-shell, write:

a) The number of electrons and protons.

b) Mass number and atomic number.

c) Electronic configuration

d) Symbol of element X

e) Representation of element X​

Answer 1

Answer:

If the number of electrons in the L shell of X is 7, then its atomic number is 9 (as 2 electrons are in the K shell and 7 electrons are in L shell).

Thus, the number of protons in X is 9 (equal to a number of electrons).

It can acquire a noble gas configuration by accepting one electron to complete its octet as it has 7 valence electrons.

Hence, option B and D are correct.

Answer 2

Answer:

your answer is both (b) and (d)

Explanation:

weather both the answer has the same meaning