6.2.2 SCI BR

Front

What group number is sodium (Na) found in?

Back

1

Front

What is the group number of the halogens?

Back

17

Front

How is the Modern Periodic Table of Elements arranged?

Back

by atomic number

Front

What is a negatively charged subatomic particle that orbits the nucleus of an atom?

Back

electron

Front

What is a subatomic particle contained in the nucleus of an atom, having the same mass as a proton but no electrical charge?

Back

neutron

Front

What is the charge of a proton?

Back

positive

Front

What is the charge of an electron?

Back

negative

Front

What is the charge of a neutron?

Back

neutral

Front

What is the atomic number of an element?

Back

the number of protons in the nucleus of an atom

Front

What is the significance of the periodic table's arrangement by atomic number?

Back

It reflects the periodicity of element properties.