The atom of an element has electronic configuration 2, 8, 8, 2. (a) What is the atomic number of the element? (b) To which of the following elements would it be chemically similar? (Atomic numbers of elements are given in brackets) `He(2),O_(8),Mg(12),K(19)` Give reason for your choice.
An atom has electronic configuration 2, 8, 7. What is the atomic number of this element?
An atom has electronic configuration 2, 8, 7. (a) What is the atomic number of this element? (b) To which of the following elements would it be chemically similar? (Atomic numbers are given in parentheses.) N(7) F(9) P(15) Ar(18)
An element has electronic configuration 2, 8, 3. What is the atomic number of the element ? To which (i) group and (ii) period does this element belong ?
An element has its electronic configuration as (2,8,2). Now answer the question. What is the atomic number of this element?
The atom of an element has 2 electrons in the M shell. What will be the atomic number of the element? Name the element.
LAKHMIR SINGH & MANJIT KAUR-TEST PAPER 2-Section B
