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Total cards: 24•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (24)

#1

Front (Question)

most abundant in earth’s crust

Back (Answer)

O, Si, Al

#2

Front (Question)

most abundant in the universe

Back (Answer)

hydrogen

#3

Front (Question)

most abundant gas in air

Back (Answer)

nitrogen oxygen argon

#4

Front (Question)

most abundant noble gas

Back (Answer)

argonm

#5

Front (Question)

most toxic metal

Back (Answer)

beryllium thallium

#6

Front (Question)

most metallic of all halogen

Back (Answer)

radon

#7

Front (Question)

most potent respiratory stimulant

Back (Answer)

CO2

#8

Front (Question)

most electronegative

Back (Answer)

Fluorine

#9

Front (Question)

strongest oxidizing agent

Back (Answer)

F

#10

Front (Question)

most important metal in engineering

Back (Answer)

Fe2

#11

Front (Question)

lightest of all elements

Back (Answer)

H

#12

Front (Question)

lightest of all metals

Back (Answer)

Li

#13

Front (Question)

lightest of all structurally important metals

Back (Answer)

Mg

#14

Front (Question)

present in plant pigments

Back (Answer)

Mg

#15

Front (Question)

present in grignard’s reagent

Back (Answer)

Mg

#16

Front (Question)

only reddish metal

Back (Answer)

Cu

#17

Front (Question)

metallic radioactive synthetic halogen

Back (Answer)

At

#18

Front (Question)

1st radioactive element used in medicine

Back (Answer)

Ra

#19

Front (Question)

radiospectrum

Back (Answer)

Cs

#20

Front (Question)

1st artificial

Back (Answer)

Tc

#21

Front (Question)

primary intracellular cation

Back (Answer)

K

#22

Front (Question)

primary extracellular cation

Back (Answer)

Na

#23

Front (Question)

secondary intracellular cation

Back (Answer)

Mg

#24

Front (Question)

secondary extracellular cation

Back (Answer)

Ca