Answer:
Sodium (Na) has atomic number 11.
Answer:
i think it's a (not sure)
Hydrogen is a nonmetal and is placed above group in the periodic table because it has ns1 electron configuration like the alkali metals. However, it varies greatly from the alkali metals as it forms cations (H+) more reluctantly than the other alkali metals.Aug 15, 2020
Electronic Configuration: 1s
At Room Temperature: Colorless & Odorless Diatomic Gas
Atomic Weight: 1.0079
Answer:
Ca
Explanation:
It is on the left side of the periodic table where metals are located.
