An element has electronic configuration 2, 8, 7.(i) To which group and

1.	An element has electronic configuration 2, 8, 7.(i) To which group and period of the periodic table does it belong ?(ii) What is atomic number of this element ?(iii) Is it metallic or non-metallic and why ?(iv) Identify the element.(v) Name an element chemically similar to this element
Answer» (i) Group 17, Period (ii) 17. (iii) It is non-metallic because it has 7 valence electrons. It can gain 1 electron easily forming a negative ion. (iv) Chlorine. (v) Bromine or Iodine or Fluorine are chemically similar to chlorine

An element has electronic configuration 2, 8, 7.(i) To which group and period of the periodic table does it belong ?(ii) What is atomic number of this element ?(iii) Is it metallic or non-metallic and why ?(iv) Identify the element.(v) Name an element chemically similar to this element

Answer»

(i) Group 17, Period

(ii) 17.

(iii) It is non-metallic because it has 7 valence electrons.

It can gain 1 electron easily forming a negative ion.

(iv) Chlorine.

(v) Bromine or Iodine or Fluorine are chemically similar to chlorine