The valence electrons of an atom do not experience the full attractive force of protons in the atom’s nucleus due to the presence of inner core electrons. This is known as the...
nuclear charge effect.
ionization energy effect.
periodic law effect.
shielding effect.
As you go from left to right across a period on the periodic table, for example Lithium to Neon, the number of protons increases. This causes the overall nuclear charge to _________.
Decrease
Increase
Remain the Same
Calculate the effective nuclear charge for Silicon. Zeff = Z - S
4-
0
4+
Elements in group 1 tend to give and electron away to elements in group 17 to form a chemical compound. For the given elements, which reaction will proceed most quickly or be the easiest?
Li and Cl
Na and F
Na and Cl
Li and F
A mystery element has 18 protons. Which one of the following statements is true about the element?
The element belongs in period 2 and is classified as a halogen.
The element belongs in period 5 and is classified as an alkaline earth metal.
The element belongs in period 4 and is classified as an alkali metal.
The element belongs in period 3 and is classified as a noble gas.