three metals from group 1 on the periodic table were tested for reactivity in water. a 1g sample of each…

three metals from group 1 on the periodic table were tested for reactivity in water. a 1g sample of each metal was placed in water, and observations were recorded in a table.\n\n| metal | atomic number | observations |\n|--|--|--|\n| lithium | 3 | metal floats; slight fizzing; beaker becomes warm |\n| potassium | 19 | metal floats; vigorous fizzing; beaker becomes hot; flames appear |\n| sodium | 11 | metal floats; moderate fizzing; beaker becomes very warm |\n\nwhich statement best describes a conclusion that can be drawn from the investigation about the reactivity of metals?\na. it is independent of the elements positions on the periodic table.\nb. it is constant within the group on the periodic table.\nc. it decreases down a group on the periodic table.\nd. it increases down a group on the periodic table.

three metals from group 1 on the periodic table were tested for reactivity in water. a 1g sample of each metal was placed in water, and observations were recorded in a table.\n\n| metal | atomic number | observations |\n|--|--|--|\n| lithium | 3 | metal floats; slight fizzing; beaker becomes warm |\n| potassium | 19 | metal floats; vigorous fizzing; beaker becomes hot; flames appear |\n| sodium | 11 | metal floats; moderate fizzing; beaker becomes very warm |\n\nwhich statement best describes a conclusion that can be drawn from the investigation about the reactivity of metals?\na. it is independent of the elements positions on the periodic table.\nb. it is constant within the group on the periodic table.\nc. it decreases down a group on the periodic table.\nd. it increases down a group on the periodic table.

Answer

Brief Explanations:

Lithium, sodium, and potassium are in Group 1. Reactivity increases from lithium (slight fizzing) to sodium (moderate fizzing) to potassium (vigorous fizzing and flames), showing reactivity increases down the group.

Answer:

D. It increases down a group on the Periodic Table.