The group to which elements belong in the periodic table ...
The group to which elements belong in the periodic table is determined by the number?
electrons
core electrons
valence shells
valence electrons
Correct answer is D
This periodic table shows the valences of element groups.
Which of these pairs are synthetic and natural macromolecules respectively? ...
The separation of petroleum fractions depends on the differences in their ...
What is the PH of 0.00 1 moldm3 solution of the sodium hydroxide...
Some products of destructive distillation of coal are?...
Catalytic hydrogenation of oils results in the production of ...
Alkanoates are formed by the reaction of alkanoic acid with? ...
Equilibrium is said to be attained in reversible reaction when...
what dose the following equation illustrate? 238U92→234Th90+4He2...
What type of bond exits between an element X with atomic number 12 and Y with atomic number 17? ...