The following data repersents the distribution of electons protons and neutrons in atoms of four element AltBltCltD

Answer the following questions:
(a)Describe the electronic distrubution in atom of element B. , (b) Is elements B a metal or a non metal? why ?
(c ) which two elements form a pair of isotopes? ,(d) which two element form in pair of iosbars?

The following table shows the position of six elements A, B, C, D, E and F in the period table. Using the above table answer the following questions : (a) Which element will form only covalent compounds ? (b) Which element is a metal with valency 2 ? (c) Which element is a non-metal with valency of 3 ? (d) Out of D and E, which one has more atomic radius and why? (e) Write a common name for the family of elements C and F.

An atom of an element contains 29 electron and 35 neutrons. Deduce a. the number of protons b. the electronic configuration of that element

Which non metalic element is in liquid form.

The following table shows the position of six elements A,B,C,D,E and F in the periodic table Using the above table , answer the following questions: Which element is a non-metal with valency 3?

The following tables shows the position of six elements A, B, C, D, E and F in the periodic table? Using the table answer the following question: which element is non- metal with valency of 3?

Four elements P, Q, R and S have atomic numbers 12, 13, 14 and 15 respectively. Answer the following questions giving reasons : (i) What is the valency of element Q ? (ii) Classify these elements as metals and non-metals. (iii) Which of the elements will form the most basic oxide ?

The number of electrons in the atom of an element X is 18 and the number of neutrons is 22. Which of the following is the correct representation of an atom of this element?

The number of electrons in the atom of an element X is 15 and the number of neutrons is 16. Which of the following is the correct representation of an atom of this element ?