What are the possible orders a matrix can have, if it has 12 elements ?

What are the possible orders a matrix can have, if it has 7 elements ?

What are possible order of a matrix can have, If it has (a) 5 elements ? (b) 8 elements ?

If a matrix has 18 elements, what are the possible orders it can have? What if it has only 5 elements?

What are the possible orders of a matrix having 24 elements? What, if it has 13 elements instead of 24?

Which is the last element in the series of the actinoids? Write the electronic configuration of this element. Comment on the possible oxidation state of this element.

What are the possible angles of projection with the same velocity to have same range?

What is the minimum possible temperature on the basis of Charle's Law.

Is it possible to have negative value in speed and displacement?

What are the unit of radioactive elements.