Chemistry Numericals
Calculate valence and core electrons of Carbon, Silicon, Nitrogen, Phosphorus, Oxygen, Sulfur, Magnesium and Calcium
Q) How many valence electrons do the following elements have-
a) Carbon and Silicon b) Nitrogen and Phosphorus c) Oxygen and sulfur d) Magnesium and Calcium
(Periodic table as a reference is provi
Calculate atomic weight of Chlorine from isotopes 35Cl and 37Cl
Question- Chlorine has two isotopes,35Cl and 37Cl; 75.77 % of chlorine is 35Cl, and 24.23% is 37Cl. The atomic mass of 35Cl is 34.969 amu, and the atomic mass of 37Cl is 36.966 amu.
Calculate number of protons and electrons in Na+, Ar, and Cl-
Question- How many protons and electrons do the following species have?
Na+ (atomic number Z=11), Ar (atomic number Z=18), Cl- (atomic number Z=17)
Solution
Calculate number of protons and neutrons from Oxygen isotopes 16O, 17O, and 18O
Calculate number of protons and neutrons from isotopes of Oxygen 16O, 17O, and 18O. The atomic number of Oxygen is 8.
Solution:
Pagination
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