Answer:
a. the pH is only determined by the concentration of B and no titrant is added to the solution yet
b. when acid is added to the weak base B it is converted to conjugal acid BH+
Explanation:
a. point labelled A is the starting point
b. point B is the equivalent point
Explanation:
i.Periodic table:It is a chart or table of the elements arranged into columns and rows according to their physical and chemical properties.
ii.Period on the periodic table:The horizontal rows of elements
iii.Column on the periodic table:The vertical representation of elements
Answer:
the correct option is:
We only need one electron to achieve a noble gas configuration
Explanation:
Halogens have 7 valence electrons in their outer energy shell, so when reacting with another element they satisfy the octet rule.
Halogens show trends in their binding energy from top to bottom on the periodic table with fluoride showing minimal deviation. They are shown to have strong bonding energy with other atoms but weak interactions with the F2 diatomic molecule. This means that as you go down the periodic table the reactivity of the element decreases due to the increase in the size of the atom.
Halogens are highly reactive, so they can be harmful to biological organisms in sufficient quantities. Its high reactivity is due to the high electronegativity that its atoms present due to its highly effective nuclear charges.