Question

Given below is a part of Mendeleev's periodic table containing an unknown element "X". Group 1 II III V IV VI VII Period 2010 las B 9019 Be N IF 1890 2 6.93Li "Na 24.3 Mg 299 Al 28.09Si 1 30.974p X 1515901 3 Si and Al are placed wrongly in this table against the increasing order of atomic weight (ii) Group IV contains type of elements in the order of non-metal and then a metalloid. (i) Formula of oxide of 'X' will be similar to the formula of oxide of 'P'​

Answer 1

Answer:

by

Explanation:

if the percentage increse in the area of circle is 44% what will be the percentage increase in its circumference?