(Groups 1-6) 1
5
6
1 H
2
1.000
3
2 L Ве
6.941 9.012
11 12
3 Na Ma
2431
19
4 K Ca
39.10 100
37 38
5 Rb Sr
85.47 87.52
55 56
6
Cs Ba
1329 1373
87 88
7 Fr Ra
2230
23
v
50 94
24
Cr
52.00
3 4
21
Sc TI
44.95
4738
39
40
Y Zr
8991 91.22
57 72
HE
138 178
89 104
Ac RI
2270
251.1
NO
9291
Ta
180.9
105
Db
2621
Mo
95.94
74
w
183.8
105
Sg
253.1
Which set of elements below is the most similar in chemical behavior?
OH, Be, SC
O Fr, Ra, Rf
Ti, V. Cr
Be, Ca, Ra

i think it is d. e because the next one is igneous.

answer; the numbers of valence electrons in the acetic acid molecule (ch3co2h) is 24;

the seeing the electronic configuration we can say that the element is fluorine.

fluorine is the most electronegative element in the periodic table.

but by only seeing the configuration we cannot say about its reactivity because we don't know if its configuration after excitation or by addition of electrons.

but if not then, it is the lightest halogen and exists as a highly toxic pale yellow diatomic gas at standard conditions. as the most electronegative element, it is extremely reactive: almost all other elements, including some noble gases, form compounds with fluorine.