" 14."quad 81-1

The values of IE_1 , IE_2 , IE_3, IE_4 and IE_5 of an element are 8.1, 14.3, 34.5, 46.8 and 162.2 eV respectively. The element is likely to be:

Find the value of 1/(81^n)-(10)/(81^n)C_1+(10^2)/(81^n)C_2-(10^3)/(81^n)C_3++(10^(2n))/(81^n) .

Find the Determinant :- |[67, 19, 21], [39, 13, 14], [81, 24, 26]|

Write the following ratios in their simplest form. a. 36:81 b. 48:108 c. 14:91 d. 84: 124

If 3a+(1)/(3a) = 2sqrt3 , evaluate: 81 a^(4) + (1)/(81a^(4))

Find the value of 1/(81^n)-((10)/(81^n))^(2n)C_1+((10^2)/(81^n))^(2n)C_2-((10^3)/(81^n))^(2n)C_3++(10^(2n))/(81^n) .

Find the value of 1/(81^n)-(10)/(81^n)^(2n)C_1+(10^2)/(81^n)^(2n)C_2-(10^3)/(81^n)^(2n)C_3++(10^(2n))/(81^n) .

Find the value of 1/(81^n)-((10)/(81^n))^(2n)C_1+((10^2)/(81^n))^(2n)C_2-((10^3)/(81^n))^(2n)C_3++(10^(2n))/(81^n) .