The diagram above represents an atom of
...The diagram above represents an atom of
magnesium
helium
chlorine
neon
Correct answer is A
The diagram refers to an atom with electronic configuration 2,8,2 hence the atomic number = 12. From the periodic table, we have the atom to be Mg (Magnesium).
The industrial preparation of hydrogen gas from water gas is referred to as ...
What volume of 0.5 mol dm-3 H2SO4 will exactly neutralize 20cm3 of 0.1 mol dm-3 NaOH solution?...
Given that for the reaction. N2(g) + 3H2(g) ⇌ 2NH3(g) ∆H = -92kJ. What is the enthalpy of format...
When NH 4CI was dissolved in water, the container was cold to touch. This implies that...
Alkanals can be differentiated from alkanones by reaction with? ...
The following steps are scientific methods except ...
Which of the following metals is commonly alloyed with copper to make brass? ...