chemistry unit 6 checks

Atoms with large ionization energy values are __________.

less likely to form positive ions

Why are both hydrogen and cesium s-block elements, when hydrogen has one electron and cesium has 55?

locks of elements on the periodic table are based only on an element's valence electrons.

What are poor conductors of heat and electricity?

nonmetals

Atoms of elements in group 1 have ____________.

one electron in their outermost energy level

Halogens are good disinfectants. Which of the following is a halogen? N O Cl Fe

Cl

Why are the ionic radii generally larger for group 15 than for group 17?

Ions forming from group 15 atoms have a greater negative charge than ions forming from group 17 atoms.

Which of the following is an ion? O2- C HCl lithium-3

O2

What makes the d block wider than either the s block or the p block?

The d sub-orbital can hold ten electrons, making the d block ten elements wide.

Which of the blocks on the periodic table contains the most elements?

d block

Which group on the periodic table is known as the alkaline earth metals?

group 2A

Where would you expect to find the smallest atoms?

upper right