(d) Due to absence of \(d\) - orbitals in \(N\) atom, it cannot accept electrons from \({H_2}O\) for hydrolysis of \(N{F_3}\).
07. The p-BLOCK ELEMENTS (XII)
189579
Electrolysis temperature is maximum for
1 \(As{H_3}\)
2 \(N{H_3}\)
3 \(P{H_3}\)
4 \(Sb{H_3}\)
Explanation:
(b)\(N{H_3}\) is most thermally stable hydride. Hence, electrolysis temperature is maximum.
07. The p-BLOCK ELEMENTS (XII)
189580
Which of the following is kept in water?
1 White phosphorous
2 Sodium
3 Potassium
4 Calcium
Explanation:
(a)Phosphorus is kept in water due to it burt at \({30\,^o}C\).
07. The p-BLOCK ELEMENTS (XII)
189583
\(V-A\) group precipitate was dissolved in \(HN{O_3}\) and treated with excess of \(N{H_4}OH\). It gives a white ppt. because of
1 \(Cu{(OH)_2}\)
2 \(Cd{(OH)_2}\)
3 \(Bi{(OH)_3}\)
4 \(Hg{(OH)_2}\)
Explanation:
(c) When the black ppt. of \(B{i_2}{S_3}\) is dissolved in \(50\%\) \(HN{O_3}\) and a solution of \(N{H_4}OH\) is added. A white ppt. of \(Bi{(OH)_3}\) is obtained.
(d) Due to absence of \(d\) - orbitals in \(N\) atom, it cannot accept electrons from \({H_2}O\) for hydrolysis of \(N{F_3}\).
07. The p-BLOCK ELEMENTS (XII)
189579
Electrolysis temperature is maximum for
1 \(As{H_3}\)
2 \(N{H_3}\)
3 \(P{H_3}\)
4 \(Sb{H_3}\)
Explanation:
(b)\(N{H_3}\) is most thermally stable hydride. Hence, electrolysis temperature is maximum.
07. The p-BLOCK ELEMENTS (XII)
189580
Which of the following is kept in water?
1 White phosphorous
2 Sodium
3 Potassium
4 Calcium
Explanation:
(a)Phosphorus is kept in water due to it burt at \({30\,^o}C\).
07. The p-BLOCK ELEMENTS (XII)
189583
\(V-A\) group precipitate was dissolved in \(HN{O_3}\) and treated with excess of \(N{H_4}OH\). It gives a white ppt. because of
1 \(Cu{(OH)_2}\)
2 \(Cd{(OH)_2}\)
3 \(Bi{(OH)_3}\)
4 \(Hg{(OH)_2}\)
Explanation:
(c) When the black ppt. of \(B{i_2}{S_3}\) is dissolved in \(50\%\) \(HN{O_3}\) and a solution of \(N{H_4}OH\) is added. A white ppt. of \(Bi{(OH)_3}\) is obtained.
(d) Due to absence of \(d\) - orbitals in \(N\) atom, it cannot accept electrons from \({H_2}O\) for hydrolysis of \(N{F_3}\).
07. The p-BLOCK ELEMENTS (XII)
189579
Electrolysis temperature is maximum for
1 \(As{H_3}\)
2 \(N{H_3}\)
3 \(P{H_3}\)
4 \(Sb{H_3}\)
Explanation:
(b)\(N{H_3}\) is most thermally stable hydride. Hence, electrolysis temperature is maximum.
07. The p-BLOCK ELEMENTS (XII)
189580
Which of the following is kept in water?
1 White phosphorous
2 Sodium
3 Potassium
4 Calcium
Explanation:
(a)Phosphorus is kept in water due to it burt at \({30\,^o}C\).
07. The p-BLOCK ELEMENTS (XII)
189583
\(V-A\) group precipitate was dissolved in \(HN{O_3}\) and treated with excess of \(N{H_4}OH\). It gives a white ppt. because of
1 \(Cu{(OH)_2}\)
2 \(Cd{(OH)_2}\)
3 \(Bi{(OH)_3}\)
4 \(Hg{(OH)_2}\)
Explanation:
(c) When the black ppt. of \(B{i_2}{S_3}\) is dissolved in \(50\%\) \(HN{O_3}\) and a solution of \(N{H_4}OH\) is added. A white ppt. of \(Bi{(OH)_3}\) is obtained.
(d) Due to absence of \(d\) - orbitals in \(N\) atom, it cannot accept electrons from \({H_2}O\) for hydrolysis of \(N{F_3}\).
07. The p-BLOCK ELEMENTS (XII)
189579
Electrolysis temperature is maximum for
1 \(As{H_3}\)
2 \(N{H_3}\)
3 \(P{H_3}\)
4 \(Sb{H_3}\)
Explanation:
(b)\(N{H_3}\) is most thermally stable hydride. Hence, electrolysis temperature is maximum.
07. The p-BLOCK ELEMENTS (XII)
189580
Which of the following is kept in water?
1 White phosphorous
2 Sodium
3 Potassium
4 Calcium
Explanation:
(a)Phosphorus is kept in water due to it burt at \({30\,^o}C\).
07. The p-BLOCK ELEMENTS (XII)
189583
\(V-A\) group precipitate was dissolved in \(HN{O_3}\) and treated with excess of \(N{H_4}OH\). It gives a white ppt. because of
1 \(Cu{(OH)_2}\)
2 \(Cd{(OH)_2}\)
3 \(Bi{(OH)_3}\)
4 \(Hg{(OH)_2}\)
Explanation:
(c) When the black ppt. of \(B{i_2}{S_3}\) is dissolved in \(50\%\) \(HN{O_3}\) and a solution of \(N{H_4}OH\) is added. A white ppt. of \(Bi{(OH)_3}\) is obtained.
