Based on the naming rules for ions, which of the following is a negatively charged ion (not a polyatomic ion)?(1 point)

Question

Responses:
chlorite
chlorine
chlorate
chloride

Answer 1

The negatively charged ion among the options provided is chloride.

Here's a brief explanation for each term:

• Chlorite: A polyatomic ion with the formula ClO₂⁻.
• Chlorine: A neutral element (Cl).
• Chlorate: A polyatomic ion with the formula ClO₃⁻.
• Chloride: The negatively charged ion resulting from the addition of an electron to chlorine, with the formula Cl⁻.

So the correct answer is chloride.

Answer 2

When moving across a period from left to right in the periodic table (excluding transition elements) which trend occurs?(1 point)
Responses:
Valence electrons decrease by one.
The energy levels decrease by one.
The energy levels increase by one.
Valence electrons increase by one.

Answer 3

When moving across a period from left to right in the periodic table (excluding transition elements), the trend that occurs is that valence electrons increase by one.

As you move from left to right across a period, each successive element has one more proton (and one more electron) than the previous element, which increases the number of valence electrons.

So the correct answer is Valence electrons increase by one.

Answer 4

Which information about an atom can a period number give you?(1 point)
Responses:
how many bonds it will make
the ionic charge it forms
the number of valence electrons it has
how many energy levels it has

Answer 5

The period number of an atom indicates how many energy levels it has.

As you move down the periodic table, each successive period corresponds to an additional principal energy level or shell of electrons.

So the correct answer is how many energy levels it has.

Answer 6

Use the list to answer the question.
potassium, Group IA
calcium, Group IIA
iodine, Group VIIA
neon, Group VIIIA
Which two elements in the list would bond together based on their ionic charges?
Responses:
potassium and iodine
calcium and potassium
potassium and neon
calcium and neon

Answer 7

The two elements that would bond together based on their ionic charges are potassium and iodine.

Here's the reasoning:

• Potassium (K) is in Group IA and typically forms a +1 cation (K⁺).
• Iodine (I) is in Group VIIA and typically forms a -1 anion (I⁻).

When these two elements bond, the +1 charge from potassium will balance the -1 charge from iodine, resulting in the formation of potassium iodide (KI).

The other pairs do not form ionic bonds:

• Calcium and potassium both form cations and would not bond ionically.
• Potassium and neon: Neon is a noble gas and does not typically form bonds.
• Calcium and neon: Same reason as above; neon does not form bonds.

Thus, the correct answer is potassium and iodine.