Addition of 2nd electron to a uni negative ion is always____________________?

Related Mcqs:

Elements with similar chemical properties appear in the_________________?

A. Same family B. Same period C. p block elements D. Right upper corner...

Which order of ionization energy is correct_________________?

A. Mg P C. Mg > A1 D. both B & C...

Shielding effect across the period_________________?

A. Increases B. Decreases C. Can not be predicted D. Remains constant...

Which statement is incorrect ?

A. All the metals are good conductor of electricity B. All the metals are good conductor of heat C. All the metals form positive ions D. All the metals form acidic oxides...

Which discovery caused a revision in the periodic law as stated by Mendeleev ?

A. Location of nucleus by Rutherford B. Atomic number by Moseley C. X-rays by Roentgen D. Natural radioactivity by Henry Bacquerel....