Boron, Aluminium, Gallium, Indium and Thallium belong to group 13 of the periodic table of elements. While Aluminium can be form the ion `[AIF_6]^(3-)`, Boron is unable to form `[BF_6]^(3-)` ion. Explain.

Boron, Aluminium, Gallium, Indium and Thallium belong to group 13 of the periodic table of elements. Write the hybridization state of B in BF_3

Boron, Aluminium, Gallium, Indium and Thallium belong to group 13 of the periodic table of elements. State whether the compound BCI_3 is acidic or basic

Boron, Aluminium, Gallium, Indium and Thallium belong to group 13 of the periodic table of elements. How can you explain a higher stability of BCI_3 as compared to TiCI_3 ?

Say TRUE or FALSE. Boron in aqueous solution forms B^(3+) ion.

Li and Mg belonging to first and second group in periodic table respectively resemble each other in many respects. a) Name the relationship. b) B can only form [BF_4]^- ion while Al can form [AlF_6]^3- though both B and Al belong to group 13. Justify.

Boron does not form [BF_6]^(3-) whereas [AlF_6]^(2-) exists, why?

The element with 1s^2 2s^2 2p^ 6 3s^2 3p^6 is placed in the group ________ of the periodic table.

The subshell electronic configuration of A,B,C and D are given below. A - 1s^2 2s^2 2p^6 3s^2 3p^4 B - 1s^2 2s^2 2p^6 3s^2 C - 1s^2 2s^2 2p^6 3s^2 3p^5 D - 1s^2 2s^2 2p^6 3s^1 a. Which of these elements can show +2 oxidation state? b. Which element belongs to 17th group? c. Find the period of elements A what is the basis of this finding? d. Which of these elements can form oxides of basic character?

Which one of the following elements has the highest melting point? (1)Boron (2)Aluminium (3)Gallium (4)Thallium

Periodic table in a chart in which elements having similar chemical and physical properties are grouped together. Out of Fe^(2+) and Fe^(3+) ions which is smaller in size? Explain.