Elements in the same _________ on the periodic table have the same number of valence electrons.

• column

• row

• column and row

• period

Where are nonmetals found on the periodic table?

• to the left of the transitional metals

• to the left of the heavy stairstep line

• along the heavy stairstep line

• to the right of the heavy stairstep line

How many valence electrons do the alkaline-earth metals have?

• one

• two

• six

• seven

Elements found below the main body of the periodic table, is best classified as a(n) _________________.

• inner transition metal

• metalloid

• nonmetal

• transition metal

The modern periodic table arranges elements according to _________.

• Atomic Mass

• Atomic Number

• law of octavesq

• triads

The development of the modern periodic table came as a result of

• scientists attempting to arrange the information known to them

• scientists recognizing the periodic nature of the elements

• scientists organizing the elements in a way that relates their position with the structure of the atoms themselves

• all are correct

What is the family name for the group containing chlorine?

• alkaline earth metals

• halogens

• mixed groups

• noble gases

Put the following in order from smallest atomic radius to largest atomic radius.

• Argon

• Cesium

• Xenon

• Sodium

Tags

NGSS.HS-PS1-1

Order the following in order from greatest electronegativity to the least?

• Carbon

• Lithium

• Nitrgoen

• Fluorine

Tags

NGSS.HS-PS1-1

Ancient Greeks thought that all matter was made of only ______ elements.

• 4

• 3

• 1

• 5