Periodic Table-Regents

Question 1

Which statement identifies the element arsenic?

Accepted Answer

Arsenic has an atomic number of 33

Question 2

Which characteristics both decrease w/ elements in period 3 when considered from left to right?

Accepted Answer

metallic properties & atomic radius

Question 3

Why does element Uut has a larger atomic radius than indium?

Accepted Answer

Uut has more energy shells

Question 4

Which element has chemical properties most similar to the chemical properties of sodium?

Accepted Answer

lithium

Question 5

Sodium atoms, potassium atoms & cesium atoms have the same

Accepted Answer

oxidation states

Question 6

Which element is a liquid at STP?

Accepted Answer

bromine

Question 7

Which set of properties is most characteristic of chromium

Accepted Answer

colored ions in solution, multiple positive oxid. states

Question 8

Neon is a non-reactive element because

Accepted Answer

it has a full valence shell

Question 9

Elements in group 2 have similar chemical properties because they have the same

Accepted Answer

number of valence electrons

Question 10

Which element is a metalloid?

Accepted Answer

silicon

Question 11

Which element is a noble gas?

Accepted Answer

krypton

Question 12

Which group 15 element exists as diatomic molecules at STP?

Accepted Answer

nitrogen

Question 13

In ground state, these atoms have 2 valence electrons & a lower ionization energy than calcium.

Accepted Answer

group 2, period 5

Question 14

Which atom has the weakest attraction for electrons in a chemical bond?

Accepted Answer

calcium atom

Question 15

Which element has atoms w/ the strongest attraction for electrons?

Accepted Answer

fluorine

Question 16

Which element is a liquid at 302 K and 1 atm?

Accepted Answer

cesium

Question 17

All of the following are metalloids except

Accepted Answer

polonium

Question 18

Which element has the greatest density at STP?

Accepted Answer

selenium

Question 19

The elements on the periodic table are arranged in order of increasing

Accepted Answer

atomic number

Question 20

Which list of elements consists of a metal, metalloid & a nonmetal

Accepted Answer

Sn, Si, C

Question 21

An ion of which element has a larger radius than an atom of the same element?

Accepted Answer

chlorine

Question 22

All of the following are not metalloids except

Accepted Answer

tellurium

Question 23

Which atom in the ground state requires the least amount of energy to remove valence electrons?

Accepted Answer

rubidium

Question 24

At STP, which element is a good conductor of electricity?

Accepted Answer

silver

Question 25

At STP, which element is solid, brittle & a poor conductor of electricity?

Accepted Answer

S

Periodic Table-Regents

Questions 25

Periodic Table-Regents

Questions 25