--- An atom of element X contains 15 electrons and 16 neutrons.

(a). (I) State the mass number of X.
(ii) Write the electronic
configuration of X.
(b) (I) Write the formula of a chloride of X. pliz , it's urgent. ​

What neutral atom is isoelectronic to mn+4

For each of the following compounds, write the formula then predict whether it would be a strong, weak, or non-electrolyte when placed in di water. for the ionic compounds only, put (s) or (aq) after the forrmula formula strong, weak or non electrolyte? a calcium hydroxide b. silver carbonate c. lead(ii) sulfate d. phosphorus trifluoride e. sodium phosphide f barium sulfate g. strontium acetate h. zinc nitrate

What is the empirical formula of c6h18o3? ch3o c2h5o c2h6o c2h5o5