Question

An element "X" has atomic number 13 :
(a) Write its electronic configuration.
(b) State the group to which "X" belongs?
(c) Is "X" a metal or non-metal ?
(d) Write the formula of its bromide.

Answer 1

HEY MATE HERE IS YOUR ANSWER:

(A) Electronic Configuration :2,8,3.

(B)It belongs to group 13.

(C) It is an metal.

(D) Formula :AlBr3.

Please mark as brainlist

Answer 2

Given:

Atomic number = 13

To Find:

(a) Write its electronic configuration.

(b) State the group to which "X" belongs?

(c) Is "X" a metal or non-metal ?

(d) Write the formula of its bromide.

Calculation:

• Element with an atomic number of 13 is Aluminium (Al).
• Electronic configuration of Aluminium is (2,8,3) i.e. 2 electrons in K-shell, 8 electrons in L-shell and 3 electrons in its outermost shell i.e. M-shell.
• Valence electrons are 3 which is less than 4. To complete its octet, aluminium atom loses its three electrons and becomes a positive ion.
• Aluminium compound is found in the group 13 of periodic table.
• It is an electropositive element which means it is a metal.
• Aluminium Bromide (Al Br) is a crystalline compound which is white in colour. It is an inorganic class of compound. This crystal is water soluble.

Answer:

(a) Electronic configuration - (2,8,3)

(b) Aluminium belongs to group 13.

(c) Aluminium is a metal.

(d) Formula for aluminium bromide is AlBr.