<span>1.Which best explains why ionization energy tends to decrease from the top to the bottom of a group?
D.Electrons get farther from the nucleus. </span>They experience a weaker attraction to the positive charge of the nucleus.<span>
3.When electrons are removed from the outermost shell of a calcium atom, the atom becomes
D. a cation that has a smaller radius than the atom. </span><span>Since the atom is losing an electron, it not only becomes positively charged, also the effective nuclear charge diminishes making the remaining electrons aproach the nucleus.</span>
The answer for your question is a compound
Ionize in water not dissociate
Although it has a negative charge, it will never accept a
H
+
to form
H
2
S
O
4
(sulfuric acid) . That is because sulfuric acid is a strong acid and completely disassociates in water.
Therefore, the sulfate ion (
S
O
2
−
4
) is the conjugate base of
H
S
O
−
4
.
