Answer:
5 atoms
Explanation:
1 calcium, 2 oxygen and 2 hydrogen makes for a total of 5 atoms in 1 molecule.
Do elements in a group on the periodic table have similar chemical properties because their atoms have the same number of electrons
A. same number of outermost electrons
Answer:
B
Explanation:
The cell membrane cannot receive or recognize chemical signals
Answer:
NH2S4. . ...............................,..
