Answer 11 Total number of electrons in neutral atom of element = atomic number o

Question

Answer 11

Total number of electrons in neutral atom of element = atomic number of element = 12

so element is Magnesium ....... Mg

Quantum numbers

for 1s orbital electrons n=1 , l=0 , m=0 , s= +1/2 and n=1 , l=0 , m=0 , s= -1/2

for 2s orbital electrons   n=2 , l=0 , m=0 , s= +1/2 and  n=2 , l=0 , m=0 , s= -1/2

for 2Px orbital electrons   n=2 , l=1 , m=+1 , s= +1/2 and  n=2 , l=1 , m=+1 , s= -1/2

for 2Py orbital electrons   n=2 , l=1 , m=-1 , s= +1/2 and  n=2 , l=1 , m=-1 , s= -1/2

for 2Pz orbital electrons   n=2 , l=1 , m=0 , s= +1/2 and  n=2 , l=1 , m=0 , s= -1/2

for 3s orbital electrons   n=3 , l=0 , m=0 , s= +1/2 and  n=3 , l=0 , m=0 , s= -1/2

Answer 8

(a) O-H bond in water is Polar Covalent bond

(b) Mg - O Bond in magnesium oxide is Ionic bond

(c) Mg - N Bond in magnesium nitride is Polar Covalent bond

(d) H-H bond in hydrogen is Non-polar Covalent bond

Explanation / Answer

11·The electron configuration of a neutral atom is 1s(2) 2s(2) 2p(6) 3s(2). Assign a complete set of quantum numbers for each of the electrons. Name the element.

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