January 2018 NY Regents Chemistry Exam 4 In the ground state, all atoms of Group 15 elements have the same number of (1) valence...

January 2018 NY Regents Chemistry Exam 3 Which list represents the classification of the elements nitrogen, neon, magnesium, and...

August 2018 NY Regents Chemistry Exam 38 When a Mg2+ ion becomes a Mg atom, the radius increases because the Mg2+ ion (1) gains 2 protons...

August 2018 NY Regents Chemistry Exam 6 Which element is classified as a metalloid? (1) Te (2) S (3) Hg (4) I Solution: Metalloids are on...

August 2018 NY Regents Chemistry Exam 5 The elements on the Periodic Table of the Elements are arranged in order of increasing (1)...

January 2019 NY Regents Chemistry Exam 8 At 298 K and 1 atm, which noble gas has the lowest density? (1) Ne (2) Kr (3) Xe (4) Rn...

January 2019 NY Regents Chemistry Exam 7 Which element is malleable at STP? (1) chlorine (2) copper (3) helium (4) sulfur Solution:...

January 2019 NY Regents Chemistry Exam 6 The elements on the Periodic Table of the Elements are arranged in order of increasing (1)...

August 2019 NY Regents Chemistry Exam 8 Strontium and barium have similar chemical properties because atoms of these elements have the...

August 2019 NY Chemistry Regents Exam 7 Which element is classified as a metalloid? (1) boron (2) potassium (3) sulfur (4) xenon...