Complete the sentences to explain your choice Match the words in the left column to the appropriate blanks in the sentences on the right. Reset Help nonmetal Titanium is a and gallium is a main group metal Lithium is a and sodium is a Lithium is in group and transition metal sodium is in group metalloid 1A (1) 2A (2) 3A (13) 4A (14) 5A (15) 6A (16) 7A (17) 8A (18) Germanium is a and arsenic is a . Germanium is in group , and arsenic is in group Argon is a and bromine is a Argon is in group and bromine is in group Nitrogen is a and oxygen is a Nitrogen is in group and oxygen is in group