Question

Which of the following does not follow the rules
of writing fromula:-
(1) HF
(2) NaCl
(3) HO
(4) NHA
S11
omonto incorrect​

Answer 1

(1) HF is your answer..

As it does not follow the rules of writing the formula.

Answer 2

Answer:

The molecule which does not follow the rules of writing formula is (3) HO.

Explanation:

The molecules of an element or a compound are represented by symbols in a molecular chemical formula. The following is the rule for writing chemical formulas:

• Put the symbols with positive charge valency first when writing them.
• Second, indicate each atom's valency at the top of its symbol.
• Thirdly, discard the positive or negative radicle and divide the valency number by their highest common factor.
• Alternate the radicle's valency.
• Lastly, affix the alternate valency number to the radicle's lower right. The ion's charges or valencies must balance.

The name or symbol of the metal is written first when a compound contains both a metal and a non-metal. Non-metals are listed on the right, in contrast.

• To represent the ratio in compounds made up of polyatomic ions, the ion is contained in a bracket before the number is written.
• Positive charges add up to equal negative charges in the solution (Electroneutrality).

• The left and right sides of the equation should be approximately equal.

• Since water dissociates, protons and hydroxide ions are constantly present.

• Because their concentrations are low in comparison to the other elements of the charge balance, protons and hydroxide ions can typically be ignored.

#SPJ3