Description : What is an ion?
Last Answer : An atom with more or less than its normal number of electrons
Description : How is a negative ion is formed?
Last Answer : It gains one or more electrons.
Description : What happens when you bring a negative and positively charged ion together?
Last Answer : If a negative ion meets a positive ion they may form an ionic compound.
Description : When a positive ion is attracted to a negative ion what’s the chemical bond called?
Last Answer : Ionic Bond
Description : When a positive ion is attracted to a negative ion what’s the chemical bond?
Description : A Zwitter ion is one which has in aqueous solution: (A) One positive charge and one negative charge (B) Two positive charges and one negative charge (C) Two negative charges and one positive charge (D) No electrical charges at all
Last Answer : Answer : A
Description : A Zwitterion is (A) Positive ion (B) Negative ion (C) Both (A) and (C) (D) None of these
Last Answer : Answer : C
Description : The negative logarithm of H+ ion concentration
Last Answer : Ans. Soil pH
Description : PH is the negative logarithm of the hydrogen Ion Concentration express4ed in moles/liter of aqueous solution. PH of buffer solution is calculated by. Henderson's equation Name the best ... Chemical kinetics deals with study of. Rates and mechanisms of chemical and Biochemical reactions
Last Answer : What does Thermodynamics helps in predicting ?
Description : Electron-withdrawing groups are meta directors because : (a) the carbonium ion intermediate has a negative charge on the meta position. (b) the more stable resonance hybrid occurs with meta ... the electrophile. (d) the carbonium ion intermediate has a positive charge on the meta position
Last Answer : the more stable resonance hybrid occurs with meta attachment of the electrophile.
Description : Why does a H+ ion attacking a carbon-carbon double bond add to the carbon with the least number of substituents? (a) the reaction is resonance stabilized. (b) the hybrid geometry favors this ... tends to attack stable centers of negative charge. (d) a more stable carbonium ion is generated.
Last Answer : a more stable carbonium ion is generated.
Description : An element has the following numbers of electrons in its shells: 2-8-8-2. Which of the following is true? The element: w) is a nonmetal x) forms an ion with a charge of +2 y) can accept two electrons z) forms a negative ion
Last Answer : ANSWER: X -- FORMS AN ION WITH A CHARGE OF +2
Description : Which of the following terms denotes the polar molecules or negative ions clustered about a central positive ion? w) ligands x) isomers y) complex ions z) dipoles
Last Answer : ANSWER: W -- LIGAND
Description : pH is defined as the negative logarithm of the hydrogen ion concentration. Comparing a pH 5 and a pH 8 solution, which of the following is true? w) There are 1,000 times more hydrogen ions in ... . z) Cannot tell the difference between these two solutions by pH, since the numbers are so close.
Last Answer : ANSWER: X -- THERE ARE 1,000 TIMES MORE HYDROGEN IONS IN THE PH 5 SOLUTION
Description : What is the name given to a polar molecule or negative ion that is clustered about a central positive ion?
Last Answer : ANSWER: LIGAND
Description : If a voltage (positive or negative) is measured on the "1" output of a flip-flop, what state is it in?
Last Answer : SET state.
Description : What type of bias (positive or negative) is added to a negative damper for the most positive extremity of the wave shape to be clamped above 0 volts?
Last Answer : Positive bias.
Description : A negative damper with negative bias clamps the most positive extremity of the output wave shape to what polarity (positive or negative)?
Last Answer : Negative potential.
Description : A negative damper damps which extremity of the output waveshape to 0 volts?
Last Answer : Most positive.
Description : What type damper (with bias) clamps the most negative extremity of the output waveform to a negative potential?
Last Answer : Positive clamper with negative bias.
Description : To which polarity does a positive damper with positive bins clamp the most negative extremity of the output waveform (positive or negative)?
Last Answer : Positive potential.
Description : How can a series-positive limiter be modified to limit unwanted negative portions of the input signal?
Last Answer : Biasing.
Description : Which portion of a sine-wave input is retained in the output of a series-negative limiter?
Last Answer : Positive.
Description : What would be the output of a negative clamper with a bias potential of −5 volts and an input voltage swing from +50 to −50 volts?
Last Answer : -5 volts.
Description : What will be the output of Q if J is HIGH, PS and CLR are HIGH, and the clock is going negative?
Last Answer : Set, or HIGH (1).
Description : . In a common anode, seven-segment LED display, an individual LED will light if a negative voltage is applied to what element?
Last Answer : The cathode.
Description : Define the term negative temperature coefficient.
Last Answer : It is the decrease in a semiconductor’s resistance as temperature rises.
Description : Does a rectifier tube conduct on the positive or negative alternation of the input signal?
Description : The point on the current curve of a gallium-arsenide semiconductor at which it begins to exhibit negative resistance is called what?
Last Answer : Threshold.
Description : What causes the negative-resistance property of tunnel diodes?
Last Answer : The tunneling action
Description : Why is the negative-resistance magnetron often operated with reduced filament voltage?
Last Answer : To reduce the effects of filament bombardment.
Description : What starts the oscillations in a negative-resistance magnetron?
Last Answer : The application of the proper magnetic field.
Description : How is a negative charge created in a neutral body?
Last Answer : Through the accumulation of excess electrons.
Description : A large negative voltage is applied to the plate of a diode, and a largewhat tube parameter has been exceeded?
Last Answer : Peak Inverse Voltage (PIV).
Description : If the load requirement consists of both positive and negative voltages, what technique is used in the voltage divider to supply the loads from a single voltage source?
Last Answer : The ground (reference point) is placed in the proper point in the voltage divider so that positive and negative voltages are supplied
Description : Which digital data encoding method records a digital one as a positive pulse and a digital (zero) as a negative pulse and returns the tape to neutral between pulses?
Last Answer : Return-to-zero (RZ) encoding.
Description : An electron moves into the electrostatic field between a positive charge and a negative charge. Toward which charge will the electron move?
Last Answer : Toward the positive charge.
Description : How do electrons get from the negative electrode to the positive electrode?
Last Answer : By current flow through the load.
Description : In the primary cell, why are negative ions attracted to the negative terminal of the cell?
Last Answer : The positive charge caused by electrons leaving the negative electrode attracts the negative ions.
Description : What is another name for the (a) positive electrode, and the (b) negative electrode?
Last Answer : a) The anode, (b) the cathode.