D) Hydrogen is placed along with Alkali metals in the modern periodic table
though it shows non-metallic character
a) as Hydrogen has one electron & readily loses electron to form negative
ion
b) as Hydrogen can easily lose one electron like alkali metals to form
positive ion
c) as Hydrogen can gain one electron easily like Halogens to form
negative ion
d) as Hydrogen shows the properties of non-metals
Answers
Answer:
1A 2A 3A 4A 5A 6A 7A 8A
(1) (2) (13) (14) (15) (16) (17) (18)
3B 4B 5B 6B 7B — 8B — 1B 2B
(3) (4) (5) (6) (7) (8) (9) (10) (11) (12)
1 H He
2 Li Be B C N O F Ne
3 Na Mg Al Si P S Cl Ar
4 K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr
5 Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe
6 Cs Ba La Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn
7 Fr Ra Ac Rf Db Sg Bh Hs Mt Ds Rg Uub — Uuq — — — —
6 Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu
7 Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr
Explanation: Make me brainiest
Answer:
ANSWER (a)
Hydrogen is placed in group I of the modern periodic table due to following reasons:-
(1) It shows outer electronic configuration similar to group I elements (i.e.1s1).
(2) It readily looses its electron to form H+ion which resembles the electropositive character of group I elements.
(3) It shows +1 oxidation state like alkali i.e. group I elements.
(4) Hydrogen also acts as a strong reducing agent like alkali metals and also forms binary compounds with electronegative elements which resembles the group Ielements
Answer (b)
Hydrogen is a nonmetal and is placed abovegroup in the periodic table because it has ns1electron configuration like the alkali metals. However, it varies greatly from the alkali metals as it forms cations (H+) more reluctantly than the other alkali metals.