Chemistry
Write the number of protons, neutrons and electronic configuration of , . Also state their position in the periodic table.
Related Questions
Which one has the largest size?
- Br
- I
- I-
- Cl
The metals of group 2 from top to bottom are Be, Mg, Ca, Sr, and Ba
(i) Which one of these elements will form ions most readily and why ?
(ii) State the common feature in their electronic configuration.
Name the element which has :
(i) Two shells, both of which are completely filled with electrons ?
(ii) The electronic configuration 2, 8, 3 ?
(iii) A total of three shells with five electrons in its valence shell ?
(iv) A total of four shells with two electrons in its valence shell ?
(v) Twice as many electrons in its second shell as in its first shell ?
An element Barium has atomic number 56. Look up its position in the Periodic Table and answer the following questions.
(i) Is it a metal or a non-metal ?
(ii) Is it more or less reactive than calcium ?
(iii) What is its valency ?
(iv) What will be the formula of its phosphate ?
(v) Is it larger or smaller than caesium (Cs) in size ?