2. When volcanoes erupt, they emit large plumes of hot smoke and ash, which can spread and cover miles of sky. Which process lifts the hot, black clouds into the sky?
A. Radiation that causes thermal energy to transfer into the clouds and hold them
together
B. Conduction that causes thermal energy to pass from the smoke into the ground
C. Conduction that causes warmer air to spread and cooler air to condense into clouds
D. Convection that causes warmer air to rise and cooler air to sink into its place

h let me think

"among the transition metal elements, manganese and zinc have a slight lowering of electronegativities. the reason behind this is that the nuclear charges of these elements are slightly weaker than the other transition metal elements due to the way their valence electrons are filled up. both manganese and zinc have their valence electrons filled up to the 4th shell with 1 pair of electrons (4s2) completely occupying it. although the electrons in the 3rd shell (3d) are yet to be paired since the outer most shell is filled up, the ability of the nucleus to attract electrons is lessened. hence,   the electronegativity (or the ability to attract electrons) is lessened."

b.false that your answer