Answer to Question #232831 in Inorganic Chemistry for Ezekiel Oronsaye

Question

The atomic number of an element x is 14 and it's relative atomic mass is 28 how many electrons does an atom of x contains

Answer 1

Silicon is a chemical element with the symbol Si, atomic number 14 and relative atomic

mass 28. So, in our case X is the Silicon (Si).

Silicon-28 is a stable isotope of Silicon with N = A – Z = 28 – 14 = 14 neutrons in the

nucleus. The electronic distribution of Silicon is 1s2

2s2

2p6

3s2

3p2.

Silicon is a metalloid – value of his electronegativity is intermediate between metals and

non-metals. Also on the outer energy level of Silicon atom there are four valent electrons, and

it may react with both metals or non-metals to form four covalent bonds and stable electron

octet configuration on the outer energy level.