Who am I?

I am a soft, silver metal in period 3. Who am I?

I am found in period 3 and have 4 valence electrons. Who am I?

Tags

NGSS.HS-PS1-1

I am a highly reactive non-metal in period 3. Who am I?

Tags

NGSS.HS-PS1-1

I am found in period 5 and have an oxidation number of -3. Who am I?

Tags

NGSS.HS-PS1-1

I am in period 2 and have chemical properties similar to Kr. Who am I?

I am a good conductor of heat and electricity and have 47 neutrons. Who am I?

Tags

NGSS.MS-PS1-1

I am in period 6 and unreactive. Who am I?

I am a halogen in period 4. Who am I?

I am found in period 2 and have 6 valence electrons. Who am I?

Tags

NGSS.MS-PS1-1

I have 9 protons and chemical properties similar to Br. Who am I?