1. which of the following elements is an alkali metal
a. calcium
b.magnesium
c.mercury
d.sodium
2. Each calcium of the periodic table is.
a.an element
b.a group
c.an isotope
d.ah period
3. Atoms that gain or loss electrons are called.
a.metals
b. nonmetals
c. ions
d. isotopes
4. in Mendeleev's periodic table elements in each column had similar.
a. atomic mass
b. properties
c. atomic number
d. symbols
5. magnesium is located to the right of sodium because mg has.
a. fewer protons
b. no neutrons
c. more protons
6. most elements are
a.metal
b.non metals
c. metaloids
d. semi conductors​