Formula Writing

What group in the periodic table can Sodium be found?

• Group 1

• Group 7

• Group 2

• Group 8

Columns in the periodic table are called?

What is the significance of the group number of an element?

• The group number tells the number of electron shells that are present within an atom

• The group number signifies the number of protons present

• The group number tells the number of valence electrons of an atom

• Number tells the amount of neutrons present

Lithium is a metal found in group 1 of the periodic table. How many valance electron does a lithium atom contain?

• 2 electrons

• 5 electrons

• 3 electrons

• 1 electron

A positively charged ion is called a/an

Why is an atom electrically neutral??

• It has an equal number of protons and neutrons

• It has an equal number of electrons and neutrons

• It has an equal number of protons and electrons

• It has more protons than neutrons

What is the name of group 1 elements?

• Halogens

• Alkali metals

• Alkaline earth metal

• Nobel gases

What are the symbols for sodium, potassium and Calcium, respectively?

• S, P, Ca

• Na, K, Ca

• Na, P, Ca

• S, K, Ca

What is the formula for Sodium Chloride?

An ion is electrically neutral

• True

• False