The answer is 4 I’m pretty sure
Its most likely B because its Skeleton is its structure (?)
The First 20 Elements and The Difference Between Elements, Compounds and Mixtures. Standard. 1 – H – Hydrogen – Odorless, Colorless and Flammable Gas. 2 – He – Helium – Colorless and Odorless. 3 – Li – Lithium – Low Melting Point and Low Density. 4 – Be – Beryllium – High Thermal Conductivity and Non Magnetic.
Explanation:
what are the answer options
