Question

1. the element located in the 4th period and in group 11 is ____.24. atoms become (smaller/larger) going across a period.25. the majority of the elements on the periodic table are (metals/metalloids/nonmetals)26. elements within a group have a similar number of _______.explain why elements in the same group have similar chemical properties.elements in the same group have similar chemical properties because they have the same number of valence electronsin group 18 don’t usually react with other elements because

Explanation:

1. The periodic table's 4th period, group 11 element is identified by matching period (row) and group (column) positions.
2. Across a period, protons increase, pulling electrons closer, reducing atomic size.
3. The periodic table has far more metal elements than nonmetals/metalloids.
4. Chemical properties depend on valence electron count, which is identical for group elements.

Answer:

1. Copper (Cu)
2. smaller
3. metals
4. valence electrons