Question

Question:Which of the following statements is (are) correct?
a. The symbols for the elements magnesium, aluminum, and xenon are Mn, AI, and Xe respectively.
b. The elements P, As, and Bi are in the same family on the periodic table.
c. All of the following elements are expected to gain electrons to form ions in ionic compounds: Ga, Se, and Br.
d. The elements Co, Ni, and Hg are all transition elements.
e. The correct name for TiO₂ is titanium dioxide.

Short answer

Answer

The elements P, As, and Bi are in the same family on the periodic table and the elements Co, Ni, and Hg are all transition elementsare true.

Step-by-step solution

The symbols for the elements magnesium, aluminum, and xenon are Mn, AI, and Xe respectively

There is a unique representation for every representation of element. Magnesium can be presented as Mg not Mn. Mn will for manganese. This statement must be false.

The elements P, As, and Bi are in the same family on the periodic table

The group of 15 in periodic table elements are N, P, As, Bi and Sb. Bi and As are in same group and this is true.

All of the following elements are expected to gain electrons to form ions in ionic compounds: Ga, Se, and Br

The metal will usually lose electrons for the formation of positively charged ions are Gallium (Ga). This is false.

The elements Co, Ni, and Hg are all transition elements

The transition element in fourth and fifth period in periodic table are cobalt, nickel and mercury. This statement is true.

The correct name for TiO2 is titanium dioxide

The correct name is titanium (IV) dioxide not titanium dioxide due to their transition. This is false.