The electropositive first increases from B to Al and then decreases from Al to Tl own the group because of

The electropositive first increases from B to Al and then decreases from Al to Tl down the group because of

The electropositive character increases from B to Al and then decreases from Al to Tl because of

The electropositive character increases from B to Al and then decreases from Al to TI because of

The electropositive character increases from B to Al and then decreases from Al to Ti because of

(a) Electropositive nature of the element(s) increases down the group and decreases across the period. (b) Electronegativity of the element decreases down the group and increases across the period. (c) Atomic size increases down the group and decreases across a period (left to right). (d) Metallic character increases down the group and decreases across a period. On the basis of the above trends of the Periodic Table, answer the following about the elements with atomic numbers 3 to 9. Name the most electropositive element among them.

Species diversity______as one moves from high to low altitudes. (a) increase (b) decreases (c) first increases then decreases (d) first decreases then increases

Species diversity______as one moves from high to low altitudes. (a) increase (b) decreases (c) first increases then decreases (d) first decreases then increases