\[
\boxed{
\begin{array}{|c|c|c|c|c|c|c|c|c|c|c|c|c|c|c|c|c|c|}
\hline
\text{Group} & 1 & 2 & 3 & 4 & 5 & 6 & 7 & 8 & 9 & 10 & 11 & 12 & 13 & 14 & 15 & 16 & 17 & 18 \\
\hline
\text{Period} & & & & & & & & & & & & & & & & & & \\
1 & H & & & & & & & & & & & & & & & & He \\
2 & Li & Be & & & & & & & & & & & B & C & N & O & F & Ne \\
3 & Na & Mg & & & & & & & & & & & Al & Si & P & S & Cl & Ar \\
4 & K & Ca & Sc & Ti & V & Cr & Mn & Fe & Co & Ni & Cu & Zn & Ga & Ge & As & Se & Br & Kr \\
5 & Rb & Sr & Y & Zr & Nb & Mo & Tc & Ru & Rh & Pd & Ag & Cd & In & Sn & Sb & Te & I & Xe \\
6 & Cs & Ba & La & Hf & Ta & W & Re & Os & Ir & Pt & Au & Hg & Tl & Pb & Bi & Po & At & Rn \\
7 & Fr & Ra & Ac & Rf & Db & Sg & Bh & Hs & Mt & Ds & Rg & Cn & Nh & Fl & Mc & Lv & Ts & Og \\
\hline
\end{array}
}
\]
Curium (Cm), Atomic Number 96
Einsteinium (Es), Atomic Number 99
Mendelevium (Md), Atomic Number 101
Nobelium (No), Atomic Number 102
Alkali metals (Group 1)
Alkaline earth metals (Group 2)
Halogens (Group 17)
Noble gases (Group 18)