Elements Symbol

The atomic number of three elements are given below : {:("Element(Symbols)",A, B, C),("Atomic number",5,7,10):} Write the symbol of the elements which belongs to (a) group B, (b) groups 15, of the periodic table, state the period of the periodic table to which these elements belong. Give reason for your answer.

How is an element symbolically represented?

For an element, symbol represent _____atom. [one/two]

An element (symbol M) has 26 protons in the nucleus. Write the electronic configuration of M^(2+) annd M^(3+) .

A solid element (symbol Y) conducts electricity and forms two chlorides YCln ( a colourless volatile liquid) and YCln-2 (a colourless solid). To which one of the following groups of the periodic table does Y belong ?

Conditions: (i) If the first element is a symbol and the last element is a number, then the codes for both are to be interchanged. (ii) If both the first and last elements are symbols, then the last element is to be coded as the code for the first element. (iii) If the group of elements contains only one symbol, then that symbols is to be coded as A. 28%956

Conditions: (i) If the first element is a symbol and the last element is a number, then the codes for both are to be interchanged. (ii) If both the first and last elements are symbols, then the last element is to be coded as the code for the first element. (iii) If the group of elements contains only one symbol, then that symbols is to be coded as A. 462+74

Conditions: (i) If the first element is a symbol and the last element is a number, then the codes for both are to be interchanged. (ii) If both the first and last elements are symbols, then the last element is to be coded as the code for the first element. (iii) If the group of elements contains only one symbol, then that symbols is to be coded as A. +5963%