(1) Name the ionic compound represented by the following chemical formula: CuO. (1 point)

Question

copper (II) oxide
copper (II) oxide

copper dioxide
copper dioxide

copper oxide
copper oxide

copper (II) oxygen
copper (II) oxygen

(2)Which of the following comes first in the name of an ionic compound?(1 point)

the number of ions present
the number of ions present

the negatively charged ion
the negatively charged ion

the neutral ion
the neutral ion

the positively charged ion
the positively charged ion

(3)Write the chemical formula of the ionic compound magnesium chlorate. The magnesium (Mg) ion has a +2 charge. Chlorate (ClO3) has a −1 charge.(1 point)

Mg (ClO3)2
Mg (ClO 3 ) 2

Mg (ClO3)
Mg (ClO 3 )

Mg2 (ClO3)
Mg 2 (ClO 3 )

Mg2 (ClO3)
Mg 2 (ClO 3 )

(4)Which option is a negatively charged ion?(1 point)

chlorine
chlorine

chlorite
chlorite

chlorate
chlorate

chloride
chloride

(5)When moving across a period from left to right in the periodic table, excluding transition elements, which trend occurs?(1 point)

Valence electrons decrease by one.
Valence electrons decrease by one.

The energy levels decrease by one.
The energy levels decrease by one.

Valence electrons increase by one.
Valence electrons increase by one.

The energy levels increase by one.
The energy levels increase by one.

My answers: 1 is A. 2 idk, Im confused. 3 idk, im confused. 4 is D. 5 is C.
Please check my answers, I need to turn in this quick check today. Please help me asap! :) Thank you!

Answer 1

Oh, I just realized that all the answer choices are doubled. I am sorry, I hope this doesn't confuse you. My bad

Answer 2

2. Sodium Chloride (salt) is Na+1 and Cl-1
so positive first

3. (Mg) ion has a +2 charge. Chlorate (ClO3) has a −1 charge.
so you need TWO chlorates for every ONE Magnesium
Mg (ClO3)2
4yes
5 yes

Answer 3

Thank you so much! I send my answers in... I got an 80, I accidentally somehow clicked negative, and got it wrong on number two but besides that I got all the other questions right. Thank you for being my lifesaver. XD

Answer 4

With regard to #4, chlorine is Cl2; however, ALL of the others are ions that have a negative charge.
Chlorite is ClO2^-
chlorate is ClO3^-
chloride is Cl^-
And YES, doubling the answer choices is confusing. The only thing worse than that is doubling the questios as well as the answers.
The entire "chain" is
Cl2 is the element, chlorine, which is diatomic.
ClO^- hypochlorite ion
ClO2^- chlorite ion
ClO3^- chlorate ion
ClO4^- perchlorate ion

Answer 5

and Cl- is chloride :)

Answer 6

Yes, Cl^- is a part of the chain I wrote. Sorry 'bout that.

Answer 7

I know and I am sorry about the doubling. I will make sure that if I have another question it won't happen again. By the way, thank you so much for the extra info. :)