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yuradex [85]
2 years ago
9

Write any two reasons that hydrogen is kept in group 1 ​

Chemistry
1 answer:
rodikova [14]2 years ago
6 0

Answer:

《HOPE IT WILL HELP YOU 》

Explanation:

(1) It resembal Alkali metel in some of properties

(2) it alos resemble as the Helogens in its properties

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10 To become positively charged, an atom must: A Galn a proton B Lose a proton C С. Galn an electron D Lose an electron } ​
Studentka2010 [4]

Answer:

D: lose an electron

Explanation:

when an atom loses an electron it's positively charged and when it gain an electron it is negatively charged

6 0
3 years ago
Compare the first ionization energy of sodium to that of potassium
stellarik [79]

Answer:

Sodium is higher than Potassium in thesame group

Explanation:

Sodium and potassium are the elements present in the first group of the periodic table. In group, atomic size increases from top to bottom this implies that even atomic radius increases. This causes less attraction force by nucleus on the electrons of outermost orbit of the atom and hence reduces the first ionisation energy, which is the energy required to remove the electron from the outermost orbit of an atom. So, as potassium is below sodium in the group, sodium has greater ionisation energy than potassium

3 0
3 years ago
Recall that the value of Kw for the autoionization of water varies with temperature. At the temperature of your body (37°C), Kw
kvasek [131]

Answer:

pH =6.70

Explanation:

When Kw = 1x10^-14

[H3O+] = [OH-] --> 1x10-7

Kw =3.98x^10-14

3.98x^10-14 = [H3O+] . [OH-]

√ (3.98x^10-14) =  [H3O+] = [OH-]

[H3O+] = 1.99×10^-7

- log [H3O+] = pH ---> -log 1.99x10^-7 = 6.70

5 0
3 years ago
A sample of xenon gas occupies a volume of 5.24 L at 411 K. If the pressure remains constant, at what temperature will this
stiks02 [169]

Answer:

161.57 K

Explanation:

V1/T1 = v2/T2

(5.24 L)/(411 K) = (2.06 L)/T2

T2 = 161.57 K

8 0
2 years ago
Which two statements are true about all generators?
BabaBlast [244]

Answer:

they have a fixed pair of magnets and a rolling coil they convert motion into electric energy they are powered by fosile fuels they use reletive motion of a magnet and coil of a wire

Explanation:

7 0
3 years ago
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