Which of the following changes is observed when we move across the row from left to right in the periodic table? Atomic radius increases

Atomic radius decreases

Number of protons decreases

Chemical reactivity of metals increases

Write the complete balanced equation for the reaction between lead (iv) oxide (pbo2) and water (h2o).

The first element on the periodic table of elements is carbon. a. true b. false

Select the correct answer. given: 2libr + ba → babr2 + 2li in this chemical reaction, 325 grams of barium (ba) react completely. how many moles of lithium (li) are produced? a. 1.18 mol b. 2.37 mol c. 4.73 mol d. 16.4 mol e. 32.9 mol