Question

How many rows does the periodic table have, excluding the two
isolated rows at the lower portion of the table? These rows are called
and so on. Based on these information, complete the last column of periods. From top to bottom, the rows are designated Period 1, Period 2, and so on.Based on these information,complete the last column of the based​

Answer 1

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(viii) 5x = 25

LHS = 5x

By substituting the value of x = -5

Then,

LHS = 5 × (-5) = – 25

By comparing LHS and RHS

LHS ≠ RHS

∴No, the equation is not satisfied.

(ix) m/3 = 2

LHS = m/3

By substituting the value of m = – 6

Then,

LHS = -6/3 = – 2

By comparing LHS and RHS

LHS ≠ RHS

∴No, the equation is not satisfied