Ph = A
Acid = C
Base = D
Litmus paper = B
Term = ?
I don’t know about 1 But number 2 is AB + xH2O = AB.xH2O
1) START counting for sig. figs. On the FIRST non-zero digit.
2) STOP counting for sig. figs. On the LAST non-zero digit.
3) Non-zero digits are ALWAYS significant.
4) Zeroes in between two non-zero digits are significant. All other zeroes are insignificant.
Answer:
1 orbital (shells) and 1 valence electron
Explanation:
If an atom of hydrogen is a neutral atom, it will have 1 proton in the nucleus and 1 electron in the electron shell.
No, isotopes would have a different number of electrons
